I STRONGLY recommend the last week of January... only because I will be there the first week of Feb, and that would be one less person in line in front of me... lol.

About the same..One thing to note is that we have gone either the last week of Jan or first week of Feb many many times, because of the low crowds. This past Jan we went the last week and it was crowded, I mean like crowded like when we have gone busier times of the year. I hope it was just a fluke, and it is not that way all the time anymore. There were some large tour groups too. It was almost as crowded as when we went this past May the week before Memorial Day.
Splash is scheduled to reopen the 14th I believe. Make sure the airline you choose is on the list for Magic Express or you will have to pay out of pocket to from and back to the airport. That can be a big pic of change so make sure when comparing airlines you figure it in.