The flavor of each Universal is also something to be appreciated.
RP - reminds me a bit of Poly. I love all the orchids and the pretty courtyard. Of the three though, and maybe this is just us, we've had a few issues with the service at the front desk. I think it is something about the management. Sometimes our room was ready by check-in, sometimes our room isn't serviced. In general, US hotels get serviced rather late in the day. CL staff has always been super, and CL food is super. The sushi loungs is a little $$, and the menu is a tiny bit spotty, but otherwise the sushi is very good! We try to eat there whenever we stay there.
HRH- I already listed some pro and cons. The vibe is a fun rock and roll. Mostly this is great, except I could do without hearing say, Twisted Sister's "We're Not Gonna Take It" at 7am in the morning. Ya Know? Other times, it is exciting to be at HRH in the evening when an event is happening. the place feels alive. Though there are plenty of kids, HRH leans slightly towards more of an adult flavor than the others. We've never tried the steakhouse, but the food court is a bit boring. All the memorabilia is fun.
Porto - Italian. Portofino reminds me slightly of the World Showcase for some reason; at both I really like the night lighting. The food is generally quite good. For me, one of the things I don't love about Portofino is that it is a bit sprawling and (layout) a tad confusing - like the Boardwalk. The CL lounge is near the lobby, so often you'll have a bit of distance between your room and the lounge. The other 2 CL's are slightly more compact. Slightly more upscale that the other 2.
I will also give a shoutout to the two new-ish hotels. We REALLY like Sapphire Falls, if only they had a CL! The décor, dining, layout, and pool are super. Though to be fair, all our rooms have been close to the lobby. If you are staying at RP, it is a very short walk to SF! We have enjoyed all the dining we have tried there. It has a Caribbean theme, so a mix of new and familiar items are offered, in very enjoyable décor.
The Aventura is very...millennial. That's the best word I have for it. Much in the rooms is powered by an iPad! It is the light switch, tv remote, air control. (We found it a bit quirky.) The food court offerings though are excellent and very modern. One of the options is a make your own stir fry or soup area. You choose from a wide array of veggies, proteins, and soup or stir fry. Healthy, delicious, custom, and inexpensive. That is just one of the stations offered. And we didn't even try to new sky top eatery. I so wish they'd put a similar food court into the HRH.