We did not consider RIU Montego Bay, though I honestly cannot remember why?! We're getting married in 3 short weeks at Iberostar Rose Hall Suites. I've seen a ton of brides who had a fabulous time at Iberostar Rose Hall Beach and have seen zero complaints about the wedding coordinators and the wedding itself. We chose the adjacent "Suites" over the "Beach" resort because it was generally just nicer. Looked like the rooms at Iberostar Rose Hall Beach are a little older and there aren't quite as many amenities there like fewer restaurants. For us, it was worth the incremental increase in cost to go with Suites, which also gives your guests full access to the Beach resort.
The Iberostars only do 1 wedding per day, which is a little bit of a plus. Not that I need to be the only bride - it is just that I got stressed out thinking about competing with other weddings for ceremony times, reception venues and spa appointments. I'm sure it's generally fine, but that would have been really bad for my anxiety. I know myself
If you have any questions on Iberostar Rose Hall Suites, let me know!