I just checked with the I-LYA organizer, and he said the social events are NOT included in the regatta registration fee this year. Each individual sailor has the option of buying a social package ($30 a person) if they want to partake of food and libations at the events.
They decided to cover the cost of the social events this way, by making it optional, instead of increasing registration fees across the board.

However, as Rick said, for the Wave sailors there are enough social activities of our own, so we don't need to get the social package. PLUS, it doesn't keep us from going to any of the events, just no beer or rum. Maybe bring your own? Don't tell anybody I said that. LOL