We had an extended stay and enjoyed many snacks. We went for whatever tasted the best rather than what cost the most.
The only regret I have is that we should have used some of our snack points for iced teas when we wanted it in the beginning. We love iced tea.
There is a thread of what snacks are allowed and I printed it out and took it with us. It really came in handy to know what was available in each park. Nothing worse than eating something and then finding something you like better a few steps away.
Go, enjoy, don't worry!!
Slightly Goofy