As someone who frequents all the parks, here’s my 2 cents.
The state of WDW is just depressing these days. Not only the condition of the parks from an upkeep and maintenance perspective; but, from the ever increasing amount of micromanagement that is required to accomplish anything. Planning dining, planning park reservations, planning prepaid LLs, etc, etc. I can’t blame anyone from needing to take a break and change the routine.
Universal can be a bit of fresh air and it sounds like you are all ready for a change.
The first and foremost bit of advice I can provide is there is NO GREATER VALUE in all of the theme park pantheon as the “free” unlimited Express Pass that is offered to guests of the Deluxe level resorts - Portofino, Hard Rock, and Royal Pacific. It allows you to go even on “busy” days and still get a ton done. Going on light days means virtual walk ons at any ride that has it. This allows you to do everything re-ride your favorite attractions minus the couple of things that don’t currently offer it (Velocicoaster and Hagrid’s). You will never look at Disney’s system the same way again.
If you want to save some money or want to experience different resorts, a nice feature of the Deluxe Resort Express Pass is that you get the benefit on check-in day and check-out day. So, you can bounce between hotel classes (deluxe>non-deluxe>deluxe>non-deluxe for example) and get multiple days of benefit.
The non-deluxe offerings at Universal are much nicer than Disneys as well.
As you probably have heard, Universal’s attractions have much higher thrill level than Disney. For example, Velocicoaster is a legit top 10 thrill ride. Extreme forces and outrageous pacing.
Universal also has an over abundance of screen based attractions. This leads to a “sameness” that is hard to escape; but, they also have some of the best screen based attractions ever. Spider-man to this day is still class leading at integrating real motion, physical sets and effects, with screens. Unfortunately, in the park next door Universal forgot (or chose to forget for budget purposes) the lessons learned on Spider-man and took the same tech and ride vehicles and mostly removed the physical sets and effects and made Transformers which never hits the highs of the original. We will have to see how the Ministry of Magic fares when it opens at Epic Universe as it will use the same RV system.
So, with physical thrills and screens - be ready to combat motion sickness if anyone in your family is prone. HP and the Forbidden Journey is especially prone to this do to how the RV tech works. The KUKA arm RV is always moving to the side even though the ride may simulate on screen motion in different directions. This combined with a somewhat narrow field of view can make even the most hardened inner ear or stomach queasy.
Regarding CitiWalk, there are a lot of options and it’s worth spending time. Fortunately, it’s open late enough you can always explore at the end of the day. I’m looking forward to the BTTF themed escape room.
One final suggestion regarding the WDW fatigue. This one needs to be taken with a bit of a “pre-pandemic” disclaimer as er haven’t been back since. If most of your Disney love comes from being inside the parks and not mostly from the “bubble” of the resorts, then Disneyland Resort is such a refreshing change of pace. While some of the pandemic changes or park reservations and budget and staffing challenges are the same, the experience in the parks is so different than Florida. Compared to Florida, you don’t have to micromanage anywhere near as much. The “magic” is (or at least was in my last non-covid visit) still palpable just showing up and letting the day unfold. The most we would ever plan on our DLR trips was where we wanted to end our day for the nighttime spectaculars and maybe get advance reservations for dining for them. Simple things like seeing characters wandering around the streets just adds so much to the equation. It also doesn’t hurt that because they have just about the same amount of attractions (but many more actual rides) in the two parks as WDW has in the four put together means that everything is close together and you aren’t anywhere near as tired at the end of the day. The lack of humidity helps as well.
I hope the break has the intended effect and you have a great time. Let me know if you have any questions.