Herman...I just got back today from a 2 week stay at CCV. As parrothead described, our first week had really strange currents and low viz on most of the south side. This past week the viz everywhere BUT the front yard was back to normal. The constant rain 24/7 kept the viz in the front yard down to 2-3 feet of brown mucked up water. In fact our DM skipped the morning drop offs and we did two reef dives to avoid the front yard. It was so bad I only did 2 drop offs my whole 2 weeks there, viz like that I can get at home. All the DM's and dive staff commented that they had never seen the current and viz conditions this bad.
As for the lack of critters, we all noticed it, too. The juv. Drums that are usually found around every corner were non-existant, only spotted one juvie and one adult during both weeks. Flamingo Toungues, Eagle Rays, French and Gray Angels, schools of Tangs, etc...all the fish and critters we normally see were just not there. According to Patty at Dockside, some fish are just sort of seasonal, you'll see them most in certain parts of the year. Even though the water temps were only 3-4 degrees cooler than our May trip, it does affect the life on the reef. We went to the West End and north side on an all day trip where it was as different as night and day. Viz was 80+ and we saw nurse sharks, turtles and all the 'normal' fish life. At the west point of the island where the light house is, you could almost draw a line in the water where the blue water from the north side met the cloudy water from the south.
On the other hand, I saw things I don't usually see in the spring. A hammerhead shark one day, 4 different types of Nudibranchs were so common I got tired of seeing them. The big adult Scrawled Filefish were everywhere, 3-4 together at a time. Ocean Triggerfish and small schools of Black Durgeons were abundant.
October is definately my least favorite time of year there. In the future I'll avoid this time of year. What you had the week you were there is definately not what we've seen to be normal in the spring around March - May. Before you give up on it, try a different time of year.
As for the 'sanitized' 'vanilla' resort experience....to each their own. Thank God we don't all like the same thing!