We go every year late Jan. last year was rather chilly and damp, but it still beat the weather up north. Crowds are very low, but Kali and Splash are usually closed. (if they only do the short refurb this year I may be able to hit splash on it's first day reopened as we are there Jan 22nd- Feb 1st)
This year split staying BLT/BCV--arriving late Thurs so parks will be closed, but I am hoping to spend time sitting on my balcony admiring my MK view and not fighting with the front desk about our Magicbands not opening the door. ;)