We went to Universal Orlando for two separate days during our vacation this summer while staying at Disney. One day for each park. My family and my Sister and Niece, who are from England, are now booked for Christmas week at HRH.
We really enjoyed our visits to US and IoA but it left us wanting more. While we will go back to WWoHP as we so enjoyed the land, it is not the only reason we are going back. We also want to experience all that Universal Orlando has to offer. We didn't get to go on all the rides in the summer as it was so busy and we could not afford to get express passes for 8 of us. We also had the problem of some of the rides closing down due to lightening in the area at one point.
We are looking forward to staying on-site, not being rushed, going back and forth to the parks and eating at Citywalk. Of course the opportunity to ride FJ a few times and getting to eat at the Three Broomsticks as it was not possible to eat there when rushing through the parks in the summer. I think this will be a much more relaxing time than Disney. Going to love the FOTL passes, not having to make ADR's 180 days before, not having to get up really early every morning and not having to do the whole in-depth planning.
We might take a day to go over to Disney just to see the decorations at MK and the Osborne lights at HS, maybe.........