Going on honeymoon and leaving behind kids 😭

I'm going on honeymoon leaving my eldest(almost 7) and newly turned 1 year old.

I coslept my LO and I don't know how to handle being without him or how he will be without me. We seriously need the few days of alone time we haven't been alone since before baby was born. How do you deal being away from baby? We will be 4-6 hrs away.