Very cool that you know exactly what it was like. The Disco was absolutely horrific, we went one night with 3 other couples and were the only ones in there! The Piano Bar was our favorite as well ... we stayed up until 2am singing almost every night!! And yes who can deny the late night munchies at the grill shack .... MMMMM MMMMM GOOD!
I have heard The Riu is not that great compared to the Sandals Resorts. We met many people that said if they come back they will stay at Sandals instead.
When we went to Dunns River Falls we skipped right through the vendors unnoticed, which is amazing because they were everywhere! Ahhhh yes "the Fence" we got hastled everyday we went to the watersports area ... Hey Lady Lemme Braid your hair, Hey Mon you need some shirts, hats, keychains, necklaces, earings, cigars ... etc.
Whatever you need they had, no joke! It was like Jamaica Wal-Mart! LOL