This seems ridiculous to me.
I know outdoor places have been (too) busy this weekend but that was because of a particular set of circumstances. The first good weekend in ages coinciding with mothers days and family plans being disrupted because of the restaurants closing.
By tomorrow they will be back to normal - even people not at work are working from home won't be out and about.
We've been advised we should continue to get exercise outdoors, now we have far fewer places to do it in, which makes the people density higher!