I have to work on the 4th of July. I really don't want to, I wanted to go to the parade and the balloon festival.

Exactly my point. For you to be able to shop, many many people have to work, instead of having the day off for a holiday with THEIR loved ones. It's not just the cashier, it's the store manager, the people who stock shelves, the custodial staff, the cashiers and the assistant managers/closers who close the place. And that's just for one store!!!!
See PCB when you are enjoying your 4 days off think of poor me having to work and not getting to spend time with MY family.

I've never heard of anyone getting 4 days off for the 4th of July...at least nobody I know ever has.

Stupid Petco is open ALL the time....Sundays....I had to work Christmas Eve...New Years Eve...New Years Day...I swear they were even open on Thanksgiving.