We love Tubbi's! It is a cross between a food court and a cafeteria. They usually have a large selection of cold foods (chicken salad, turkey, roast beef sandwiches, fresh fruit, salads, etc.) and a decent selection of pre-cooked and cook to order foods like meatloaf, burgers, hot dogs, eggs, etc. We went at all times of the day and night and always found the selection decent. Of course, during peak times there are more choices.
They also have soda, beer, etc. by the bottle as well as all kinds of snacks like chips, cookies, etc. that you can purchase by the bag or box. They usually have a nice selection of baked goods and pizza as well.
There is plenty of seating and I've never seen it so crowded you can't find a seat, but you can always take the stuff up to your room or find a table outside near the pool. Prices are moderately high for what you get...a sandwich runs about $6-$8.
You shouldn't have a hard time finding something you like..no matter what the time. If you wish to pay a premium, the Dolphin has 24 hr room service and they will try to make just about anything you want at almost any time. Ask us...we ordered a banana split after our night at PI.....no big deal...it was up in about 15 minutes!