I’m a lurker on this forum, but have been helped so much by reports from others that I’m chiming in for you as we are at UOR right now. I won’t do a full report, but will give some quick comments! We are a family of 5 staying at RPR with 4 day passes and express passes because of our hotel- got here late 12/17. We didn’t decide to come for sure until a few days in advance due to concerns about travel these days, but decided to just go for it and we’re having a great time!
It is very busy here-we took our time the first morning due to a late arrival and waited in an hour long line just to enter the parks (our fault- it was a 9am open and we left the hotel at 8:50). Then we got smart and left the hotel at 6:30 for a 7am early opening yesterday and today- we basically walked right into the park and on to Hagrid’s both mornings with few stops- I think off the ride by 7:20 both days (and the ride is amazing by the way!). The walkways are crowded in many places, but everyone is wearing a mask and trying to stay apart. The lines are spaced and people have been respectful. We haven’t waited more than 30 min with our express passes (love these SO much!), and usually 5-10 min. I don’t think it will be nearly as busy when you go since we are here on the weekend with holiday crowds.
My husband was very hesitant due to Covid concerns, but even he has overcome it- we are constantly moving in the lines, so not standing in prolonged contact with anyone and everyone is masked. We hadn’t eaten in any restaurants since March, but feel safe here with spacing between tables and barriers if they are close. I hope this helps you- I’m happy to answer other questions if you have them. I can’t speak to Disney comparisons right now, but this is our first time here and we love it!