Underground Robbery

I went to the Discovery Children's Museum today with my friend Crystal and her adorable kids. It's such a fun place. We bought a pass for Christmas so we've been several times since then.
Let me give you a little background info: A few months back Pete and me took the kids there and when we were trying to leave the underground parking we saw a sign: Cash or Checks only. Seriously? What year is this-1980? Who carries cash around? When did you last write out a check? And for a dollar? I don't think so. The Old Cashier Man gave us a good stern talkin' to about reading signs and yada yada. He finally gave up and told us he was taking down our license plate and we were going to owe him that dollar next time. That's right, we were shaking in our booties. Anyway, since then, I've remembered to validate parking inside the museum because it's one dollar instead of three, and I can use my card. Today however we stop to get validated and they tell us:
"well it's a dollar for up to three hours, but if you use a card there is a minimum purchase of five dollars. You can buy something from the store to make up for it. . . . "

WHAT?

ROBBERY!!! They WILL take money from us or they will NOT let us leave! What is this conspiracy? I'm a MEMBER for crying out loud! Haven't I paid my dues already? They know we can't use our cards outside, so they cook up this brilliant scheme.

Now I'm grumpy.

Watch out children's museum. You're gettin' a letter!