Okay- tough sitch. Wait on the holiday. Do not bring it up. Honestly, it would kill me to let kids go for three weeks, but maybe you should think about it. Personally? I would want to go to. We all love our WAS and that is why we are here. Do I think you should go? You already know the answer, because you gave it. Cadet always says our spouses give us the gift of time and he/she? is right. When he first posted I may have said a few unkind words to the post *ahem*, my apologies.
But your H needs this time and so do you. Three weeks to find you is huge. You are still defining yourself as mother and wife. You need to define yourself as SS now. Maybe it is time to live up to your name. Once the big girl panties go on, they ain't coming off. A little clarity is not a bad thing.
Take a meditation course, do some running/walking, cry, scream, yell and find out who you are.