We arrived about 1 1/2 hours before closing, but p...

We arrived about 1 1/2 hours before closing, but paid our $15 per person and proceeded to enjoy our walk through the sculpture and plant gardens.
As we were finishing our tour my girlfriend's blood sugar dropped.
We made it to our car and I sat her on a curb beside it to get her a snack and drink.
While she was eating her snack a park employee came and told us they didn't allow tailgating. That we could sit in our car or leave.
She walked away without giving me any opportunity to explain.
I am very disappointed in the way this changed our whole experience.
$30 for a hour and a half walk through the gardens with a threat and an insult to finish.
Completely inappropriate.