Overnight camping without me

My husband wants to take our 5yo son camping with a buddy and his boys who we rarely see. My husband has never watched our son for the night let alone taken him away for the weekend. I'm having a really hard time with it. Can someone please help me with my feelings? I sound so dumb but I know part of it is probably him being away for the first time. I'm having a hard time being ok with it. I think part of it is my husband doesn't necessarily think about the kids in the same way I do. I mean that in like he might not think to bring food he'll like or the opposite he'll just eat junk all weekend. He doesn't necessarily think about when it's time to nap, etc. I appreciate your thoughts. :-/