No, he has a living to make

The shop owner really is sympathetic to their plight and he really enjoyed Dana's unintentional show, but he can't start cutting people deals. He knows he's too nice for his own good and that he could run himself out of business. So, regrettably, he can't give them a discount and can't sell them the swimsuit. And, so, the girls are left with one option: they have to go home.

So, they walk through the increased number of guests in both the park and the parking lot and head to their vehicles. They will have to give up on a day at the water park and hang out at Dana's place.