Some meets are a great distance away and require several hours or more of commute time. For these, the best bet may be getting there the day prior to avoid rushing or at worst, missing the meet altogether due to an unforeseen circumstance. Getting there the day prior would allow you to arrive fresh without the tiring frustrations of early morning travel. If the meet is local and requires a short commute, still endeavor to arrive with time to spare. Food and beverages consumed the day of the meet are important to success and maintaining a high energy level during those long contests.
Many lifters like to eat high carb breakfasts the day of the meet to sustain their energy.
This could cause some gastro-intestinal problems that can wipe out all your hard training in a single stomach cramp. Having food and beverage available at the meet can really help. I would suggest some Gatorade type drinks and some fruit. Sandwiches are not a bad idea especially if there is not good food available at or near the meet. Bring a cooler to keep everything cold.