People need to chill. This isn't that big of a deal. The poor girl at the door doesn't make policy. She's just trying to earn a paycheck. At most places that are requiring a mask for entry, if you explain that you forgot, they'll give you a free mask. Which you wear from the front door to your table, and then remove. Stupid, yes, but whatever. Just suck it up and do it. It's not that horrific.
A few weeks back, we were up at Bass Lake and my daughter walked into the supermarket and noticed that the staff and about half the customers were wearing masks. So, in an effort to get along and coexist, she pulled a mask out of her purse and put it on. She's walking down an aisle minding her own business when some brave freedom warrior called her a sweet and delicious bag of candy for wearing a mask. With no preamble. Just walked up to her and verbally laid into her.
When she got back to the car and I heard about it, I went looking for this brave warrior of freedom. We were going to have a little discussion about freedom of expression. Whether he liked it or not. And violence as communication was definitely on the table as far as I was concerned. So unnecessary. He wound up leaving at a high rate of speed. We were close to someone getting hurt (or worse) and someone going to jail. All over a piece of paper. So stupid. My reaction wasn't great, but when you verbally assault my daughter for absolutely no reason, there's no guarantee asshole.