Nice intro, Bob. Just about to recommend my post from a few weeks ago about our trip to Riding Rock. No nitrox, but even if there was, I wouldn't have used it. Why, you ask? Three dives a day doesn't tire me out so not a factor. Second, and most important, you can go really deep either by choice or accident. Many amazing swim throughs have you exiting at 125 feet or so. You want to do them because they are great and at 32%, couldn't be done on nitrox. Two, many times I would look to see a coral formation that I thought was at the same depth as me and head over only to realize I dropped 20-30 feet due to the sloping sand. We had many "watch your depth" conversations on the boat because everyone was getting just a bit fooled by the topography. BTW, three of us are instructors and 4 DMs and it happened to us as well as our other guests. So, you think your at 90 and ease on over to this cool coral head ad your at 110.
Anyway, see my previous post. One of our group left Riding Rock when we left and went to Small Hope Bay and liked it. He did say the diving was better on San Sal due to the topography and friendly reef sharks on every one of our dives. Also, there really is no nightlife except the bar next to the dining room which is nice and relaxing.
Rob