We've done it for a few years and had no worries. Mind you, it was in a 44' steel
yacht with workboat finish and a few rust spots.
In fact we found that no one wanted to come near us, and the few that did by accident
There are two main techniques, the best depends on your skill level and the weather
#1 is to arrive as early as possible in a good spot, get the anchor
well dug in, and then to settle in for the night. Offer to help any that arrive late - they always refuse, make a mess of anchoring
and then slink away to lick their wounds elsewhere. The main disadvantage is that those who arrive later anchor closer to the show, blocking your view. The main advantage could be that one could have a few drinks (but do remain under the legal
limit!) and still have a good time.
#2 is to arrive as late as possible, anchor on the outside of everyone else, blocking their view, then up anchor after the movement ban and go back to your mooring
or marina or somewhere safe. The disadvantages are that you need good night navigation
skills and drinking at all is not a good idea.
Caveat:- never tried #2 myself. Just too chicken.