I haven't been personally, but a friend has and I'll relay his story. They loaded up the bikes and went to Daytona. The youngest and very well built of member of the group decides he's going to go shirtless while they cruise the strip the first time. The eldest in the group puts on a full sleeved denim shirt and buttons it up to the top button. Young guy laughs at older guy. It takes more than 2hrs to cruise the strip from one end to the other and back at a snails pace. The next day the young guy is burnt like a lobster, older guy laughs at young guy. They enjoyed the rest of their week, but due to massive attendance got very little riding done.
The following year the same group decides to go again. Only hotel they could get into was an hour away from Daytona. Halfway into the ride to Daytona they realize how much MORE fun it is to ride (even through FLA is very flat and not terribly exciting) and decided to continue riding and never went to Daytona the whole week. Everyone agreed it was WAY more fun to go riding than to attend the rally.
Your experience may vary, so take it for what it's worth. Me personally, I hate large groups of people where all movement is slow, and I especially don't like large groups of middle-aged people (which I am officially a member of) pretending they're tough bikers for a week (something I have no interest). If I wanted to see people pose I'd attend a burlesque show. At least that would be enjoyable!