I made sure to bring a lot of things I liked to drink. The shelf stable Horizon chocolate milks were so good cold in the afternoon! Seltzer or sparkling water for a change. I cooked homemade food and froze it; lasagna, beef stew, etc. I put it in ziploc bags in single serving portions. You can heat the food by putting the bag in boiling water. I am somewhat of a foodie in the default world though, the effort is not for everyone out there.
I too was surprised how my appetite was so much lighter when I was out there. I find that I eat a hearty breakfast and then a lunch/dinner meal in late afternoon or early evening. I liked a lot of snack food too for in between times. Tortilla chips and salsa, applesauce, pudding cups, fruit cups, candy, mmmm pickles. I almost forgot salt and vinegar chips! The Indian boil in the bag meals from Trader Joe's are satisfying and there is rice that is already cooked from there too. I haven't before, but I think I will make pancakes one day for breakfast. I also bring Cliff Builder bars that have 20 grams of protein, taste pretty decent, and do fill you up. I also recommend trying this stuff at home so you know what you like. I brought a ton of food home last year, and probably will again this year.
I bring this grape powder called Replenisher I think that you mix with water. It tastes really good, is a change from plain water, and keeps your electrolytes up.