Insanity Workout and Nutrition

[Insane10]

Hi everyone, I am 17 years old and do the insanity workout. I just started month 2 and I have seen some nice results from month 1. Every muscle on me is stronge and more defined except abs... I still can't see them! Is this normal? Do they just take longer to come out? If anyone has any comments about that I'd love to listen. Secondly, being a teenager during the summe I travel a lot. Does anyone have any suggestions about what I could/should eat while I'm on vacation.