This means wait times for going to and from the hotel can be much longer than normal. Depending on exactly where you're staying at the hotel the tram stop may be closer than the Monorail, and the wait for a tram is usually pretty short. All of the local hotels and motels have shuttles or buses to take guests to and from the hotel and park. The shuttles usually run on a regular schedule, but often that schedule is every half hour or hour. Also, some hotels and motels share shuttles which can significantly affect crowds.
Shuttles are usually for use by guests of that hotel only.
There is a taxi stop at Disneyland. Obtaining at taxi at the park is usually very quick and easy. There is a bus stop at Disneyland and depending on where you're staying, this may be an option. You can leave and return the same day if you hold on to your receipt. Overnight parking is not allowed.