Going off of my experience last year, you will have some themed desserts (cupcakes, rice krispy treats, brownies etc.) and light appetizers (mac and cheese bites, chicken skewers, mini beef wellingtons etc.). My group found the food very tasty and buffet style was a plus. Enough diversity in the selections to make it feel like a full meal. There's also a cash bar in the food area. I would recommend trying to take advantage of your wait before the tour to use the private bathrooms inside of Cafe La Bamba, but if you need to stop for a bathroom break just let the tour guide know. Same goes for the freestyle cups. Bring that up to your tour guide and I'm sure they'll even point a few of them out to you as you're on the tour. The guides, in my experience, do a great job at trying to accommodate everyone with the non-private tours. IIRC, my tour last year started at 7:30 and ended around 11:30. We had the opportunity to go on rides using express for the final hour and a half that the park was open, but it was the last day and so overcrowded so we decided against it. What I liked most about the 7:30 time slot is that it gave us a chance to do the S&S at Simpsons, hit Slaughter and Blumhouse, rode Gringotts as soon as it opened at 6:30, and then made our way to La Bamba at 7 to take advantage of 30 minutes of food.