Dazed by the days

I suppose you can’t expect flawless grammar in a local publication that’s handed out for free in coffee shops. But I’m a grammar snob so I’ll complain if I want to. Here is a picture of an event schedule in a local paper:

Saying "every Tuesdays" is wrong every day of the week.

1. The word “everyday” is an adjective describing something that happens on a daily basis. This ad should read, “Every day except Thursdays.” (Sorry, is my nitpickiness showing?)

2. I’m not sure why the second event reads “Every Tuesdays.” I guess that S just really wants to fit in somewhere.