Welcome, Becky and crew....
We are Army Retirees who have full timed for over 9 years now....FamCamps and or Military CGs are a great benefit for us who serve or have served..great places to stay a few months while TDY for training...I don't know which Famcamp you are at in AR, but for Thanksgiving, check with the "Dining Facility" about dinner....they really go all out, you know...or you can do dinner at the camper, you just have to be clever....
Christmas tree is doable, just not a big one....We have a 4ft artificial tree that we put on a TV tray and just go from there....
Small gifts under the tree....and let Santa know that if he brings anything BIG....to leave it out by the picnic table..
or on the patio....As for the 2 large dogs, well, I'll have to think on that....I only have Spinner who's a spoiled rotten Jack Russell, who thinks he's a kid...
Don't worry, you are a military wife and you will figure it out and adapt....anything I can help with, just let me know, and I'll try to do my best....we military wives stick together....