No kids
Ok so there seems to be some confusion about age, its 18 to enter the spa, its 21 to enter the cafe because it serves alcohol.
The Family Days usually Memorial Day, 4th of July, Labor Day, Black Friday (day after Thanksgiving), Martin Luther King Jr. Day, and President Day. Maybe New Year's Day as well.
According to the website, you only need to be 18 to enter, and family days do sporadically occur. The most recent was Jan 1, 2018. I don't think family days have a regular schedule, so best bet is to call and ask.
All customers must be 21 to enter. There are no family days.
Thanks! Your answer is awaiting moderation.