Given the challenging operating environment as a result of COVID-19 and we are very pleased with our results to this point in the 2020-2021 ski season across our 34 North American resorts.
While our results for the second quarter continued to be negatively impacted by COVID-19, total visitation across our North American destination mountain resorts and regional ski areas were down approximately 5% compared to the same period in the prior year.
Despite the travel challenges associated with COVID-19, which compares to 57% in the same period in the prior year.
with destination guests, including international visitors, declining to 15% of Whistler Blackcomb visits, excluding complimentary access, which compares to 48% in the same period in the prior year.
Our season pass unit sales growth of 20% for fiscal year 2021, created a strong baseline demand heading into the season across our local and destination audience and will be one of the most important drivers of our performance and relative stability for the season.
For the fiscal 2021 second quarter, 71% of our visitation came from season pass-holders compared to 59% of visitation in the same period in the prior year.
Our growth in pass-holders this past year also positions us well as we head into the 2021/2022 season.
We are excited to launch our 2021/2022 lineup of Epic Pass products on March 23, 2021.
Resort reported EBITDA margin for the fiscal 2021 second quarter was 40.3% compared to the prior year period of 40.9%, while resort net revenue decreased $240.1 million over the same period.
Net income attributable to Vail Resorts was $147.8 million or $3.62 per diluted share for the second quarter of fiscal 2021, compared to net income attributable to Vail Resorts of $206.4 million or $5.04 per diluted share in the prior year.
Resort reported EBITDA was $276.1 million in the second fiscal quarter, which compares to resort reported EBITDA of $378.3 million in the same period in the prior year.
Fiscal year 2020 season pass revenue was adjusted to exclude the impact of the deferral in Pass product revenue as a result of pass-holder credits offered to 2019/2020 North American pass-holders.
Fiscal Year 2021 season pass revenue does not include the Pass product revenue recognized in the first quarter of fiscal year 2021 as a result of unutilized pass-holder credits.
This approach results in a year-over-year comparison of season pass revenue, exclusive of the impact of discounts provided to our 2019/2020 pass-holders.
Season-to-date total skier visits were down 8.2% compared to the prior year season-to-date period.
Season-to-date total lift revenue, including an allocated portion of season pass revenue for each applicable period, was down 8.9% compared to the prior year season-to-date period.
Season-to-date ski school revenues decreased 43.2%.
Dining revenue decreased 56.9%, and resort retail and rental revenue decreased 31.6%, all compared to the prior year season-to-date period.
We expect net income attributable to Vail Resorts to be between $204 million and $247 million, and Resort Reported EBITDA is expected to be between $560 million and $600 million, assuming current regulations, health and safety precautions and the levels of demand and normal conditions persist through the spring, consistent with current levels.
revolver availability under the Vail Holdings Credit Agreement and $179 million of revolver availability under the Whistler credit agreement.
As of January 31, 2021, our net debt was 4.2 times trailing 12 months total reported EBITDA.
As previously announced, the company raised $575 million of 0% convertible notes in December 2020, which provides added flexibility in terms of our ability to pursue high-impact acquisitions as well as reinvest in our resort portfolio.
We have increased our core capital plan by approximately $5 million based on our updated outlook and now expect to invest approximately $115 million to $120 million, excluding onetime items associated with integration of $5 million and $12 million of reimbursable investments in real estate-related capital.
We also plan to add a new four-person high-speed lift at Breckenridge to serve the popular Peak 7, replace the Peru lift at Keystone with a 6-person high-speed chairlift, and replace the Peachtree lift at Crested Butte, with a new 3-person fixed-grip lift.
These investments will greatly improve uphill capacity, further enhance the guest experience and complete our $35 million capital plan for Triple Peaks.
We will also continue to invest in ongoing maintenance capital to support our infrastructure across our resorts, including onetime items associated with integrations of $5 million and $12 million of reimbursable investments in real estate related capital we expect our total capital plan to be approximately $135 million to $140 million.

Summary:
Net income attributable to Vail Resorts was $147.8 million or $3.62 per diluted share for the second quarter of fiscal 2021, compared to net income attributable to Vail Resorts of $206.4 million or $5.04 per diluted share in the prior year.
Fiscal Year 2021 season pass revenue does not include the Pass product revenue recognized in the first quarter of fiscal year 2021 as a result of unutilized pass-holder credits.
We expect net income attributable to Vail Resorts to be between $204 million and $247 million, and Resort Reported EBITDA is expected to be between $560 million and $600 million, assuming current regulations, health and safety precautions and the levels of demand and normal conditions persist through the spring, consistent with current levels.
We have increased our core capital plan by approximately $5 million based on our updated outlook and now expect to invest approximately $115 million to $120 million, excluding onetime items associated with integration of $5 million and $12 million of reimbursable investments in real estate-related capital.