I like CBBR 'much' more than Adventura, and lately their prices have been about the same. You can still go over to the Adventura top floor bar if you stay in CBBR, but it gets really windy and chilly up there in December. Last year we went first week of December for the first time. Best Universal vacation we ever had. Seuss Landing transforms into an immersive Christmas area with tons of really great Streetmosphere characters from Grinchmas. And we went to 4 showings of the new Grinchmas, it's that good. Hogsmeade has a nice holiday feel, and like it's sister show in Hollywood, the Christmas projector show is breathtaking. The Turkey dinner holiday special at Leaky Cauldron was 'by far' the best quickservice meal I've had at any park. Delicious, large portions, and a decent price. USF is constantly filled with Christmas music and is really holiday immersive now. The new Macy's Parade is 'excellent'. Watched that three times. And don't miss the new Cinemagic Lagoon show. It's Disney night show level. The Celistina Christmas show in Diagon is OK, but I think the regular show is better. And don't miss the Blues Brothers' show that has a partial Christmas theme. It's a hoot. Take clothes for warm & cold. It was always sunny, but days ranged from high 60's to mid 80's, so we were able to get some pool time in. And....all the resorts are decorated really well. We took one evening just to resort bar hop and check out the trees and decorations. Our fav resort bar/restaurant is StrongWater Tavern in Sapphire, which is just a 4 or 5 minute walk from CBBR. I strongly recommend it. Mannheim Steamroller should be playing the night you arrive. We loved it. Saw that twice. Parks aren't dead, but they're not overly crowded. You can get by without Express, especially if you do the single rider lines. Gringotts was 30-45 minutes and FJ 20 to 30 minutes most of the time last Dec. SpiderMan 20-30 minutes usually. Also, do the Seuss Trolley in the darkness. It's ten times better, and really fun. Do Kong it in the dark if you can. ...All in all, we loved early December at Universal.