I live in New York and get to experience fall all the time so I'd want to go somewhere a little warmer. I love Charleston, SC and Savannah, GA. Depending on what you guys enjoy you could also check New Orleans, or Florida (Miami, Key West, or Orlando/Disney) out. I haven't been but I've heard lovely things about Sedona, AZ. Or Napa in California. Of, if you're looking for fall like weather, come up here! New England is lovely. Lots of choices!!
November means chilly weather for most of the U.S, but if you are okay with that, then you could definitely get a cabin in New Hampshire or Vermont. The fall colors there are beautiful and there's plenty to do.
If you want warmer weather then I'd probably do Florida or California. There's also Hawaii which is technically in the U.S but a lot further!
I would suggest Gatlinburg TN if you like Mountains but they just had a huge Forrest fire so it may not be as glamorous right now. Sorry not much help. I'm going to Montana for our honeymoon, Glacier National Park in October. It's beautiful mountain area.
We're having an early Nov wedding as well and since FH and I had a wonderful time in Vermont last year, we decided to go again! Nothing beats New England foliage. There was so much we wanted to see and do.
I live in Indiana so fall is pretty common for us why we picked a November wedding, I'm thinking something somewhat warm doesn't have to be a beach but I don't want to walk around in my coat either, I looked in to Hawaii but the price is a little higher than what I think we want to spend but California or Arizona might be a good ideal