Two Plus Two Newer Archives - Need some Advice, Going away for 1 week

So I'm going away for a week to Walt Disney World On Thursday with my wife, daughter and Father in law and I need some advice on what to eat down there and how to eat it.

I did some research and you are allowed to bring water into the park so I am brining my whey protein.

My biggest problem is going to be how do I eat every 2-3 hours?

My wife is 5"1 and weighs about 100 punds, she has problems finishing a 6 OZ steak and she eats maybe 3 x a day.

My father in law is a big guy but he eats like 2-3 big meals a day.

Myself on the other hand, I starve if i do not eat every 2-3 hours. and in a typical day I will eat 7-8 "small meals"

So what can I bring with me that I can munch on in the park so I don't have to pay some extravagant price for a sub, or hamburger patty every 2-3 hours.

We are flying by plane and I'll have a small backpack to bring into the park with me, about the only thing I can think of is Protein bars as I can not cook or prepare anything ahead of time.

As far as Protein bars go how is this one?

Supreme Protein Bar:
360 Calories
Calories from fat 144
Total Fat 16g
Saturated fat 5g
Trans Fat 0g
Cholesteral 20mg
Sodium 300 mg
Total Carbs 34g
Sugars 4G
Sugar alchols 27g
protein 30g

I should also mention that You can't bring food into the PArk so I need somethin I can conceal in my pockets or in a small hard to find compartment in my backpack