Tips for traveling with a toddler?

we are taking DS (15m) on our first vacay for a few days and im wondering if its gonna be relaxing and enjoyable or totally crazy

I was hoping for any tips because the idea of naps on the go and him sleeping in the pnp in the same room make me feel like hes gonna have sleeping issues......we are mostly home during his naps so i dont know if he will just konk out in the stroller.

Also what does everyone do about food/snacks? I feel like most restaurants dont have the healthiest choices but i dont know if the hotel has a frig in the room so i cant bring yogurt/fruit. He usually gets a bottle of milk at night before bed - i was thinking of trying the parmalat stuff but not sure hes gonna like it.

TIA