Yep MSTA rallies are not your traditional biker/motorcycle rally full of 100 bike group rides. I know we've had first times show up who were surprised we don't do that.
Don't want to ride alone, use the sign up sheets, talk to others (at meals, in the parking lot in evenings, etc.) about riding and looking for others to join with. Just understand not everybody will be willing to include people in their ride, they may already have a large group or have other legitimate reasons. Don't take it personally if somebody says no, keep trying, the earlier (night before) the better.
Most things are extras rather than included in the event price because not everybody does everything. I think that is better than charging a higher price to include everything.