I have also noticed that there are only a couple of us having weddings at Riu Negril!
I liked Negril because the beaches there are absolutely beautiful! I have nothing against OR, but my sister went to a wedding in OR and was displeased with the murky beach (it was not at Riu though). My other sis went on her honeymoon at Riu Negril and loved it, so my choice was easy.
Also, I have been assured by my travel agent that there would be no problem with confirming the reception.
Yes, you are correct that OR has a little more to do outside of the resort, but since my FH and I are on a very tight budget we probably couldn't afford to do many of them! There is plenty for us in Negril!
Again, I think you will be happy with either of the resorts, they are both beautiful and good luck with your change of plans! If you have questions about Negril please let me know.
Sorry this is so long........I'm so bored at work!!! AHHHHH