Everybody takes criticism over lifestyle choices. Hell, I sometimes get told my hair looks girly because it's longer than than about 80% of guys, but I'm not gonna freakin sue them for saying it.
So cut your hair you complete idiot. Sorted......no more bullying. Now change your sexuality? Not so easy is it. "Lifestyle choice" is not the phrase to be using here. You make it sound as though it could be easily changed, and even go as far as comparing it to hairstyles. My god you are ignorant.
Now let me tell you a story - I grew up in a small village in the north east of England, and i came out 6 years ago, when i was 15 at secondary school. It was HARD. I was okay with myself once i got my head round it, and i came out really early, cause i personally couldn't deal with it being a secret, as it makes you get very introverted...... Within days i was banned from going in one of my best friends houses - not even to use the toilet, and his dad told me he'd rather live next to a paedo. Now THAT was embarrassing. Words hurt. Slurs like this hurt. When you're at your weakest, and you've worried about coming out for a year or two, been through denial, finally understood it yourself, you get a little bit more comfortable and you finally pluck up the courage after years of being very introverted and isolated to tell people, this is the cherry on the cake. I imagine thats exactly how this couple felt - its public humiliation.
Now i don't believe in this American culture where everyone sues everyone - its too much of a money orientated thing, and this shouldn't be about the money. Its about the morality behind it. The employees were WRONG - flat out. Thats like printing an onride photo of a black guy and putting a caption saying N****. I don't think many people would stand for that. Its exactly the same. And the park did nothing about it, they could have avoided this trouble, but they chose not too. So the couple have every right in taking it further. Again, i don't believe in suing, but if the couple tried to do this more respectfully to the park, and the park ignored them, them f*** the park, they need a kick in to the real world. At the end of the day they are supposed to provide pleasure and entertainment for their guests. Not make them feel embarrassed and ashamed of who they are.