I think that memberships for zoos, aquariums, and safari parks should have limitations on what days you can visit or possibly require a higher tier membership for access to those blackout dates. I don’t know if there are many places that have blackout dates in the memberships other than theme parks typically. Some days, prior to COVID, were unbearable at times and I imagine some have experienced that as well in the more highly visited zoos/aquariums/safari parks. Yes I say this well aware San Diego is implementing that now with new members and will affect renewing memberships including myself, having weekend dates blacked out and certain holidays as well not available at certain levels. I avoid weekend visits in general for the aforementioned reason.
...why?