Always wanted to go but no way I could control my erection

I've been to a nude beach on the East Coat of Florida. Last time I was there I got a big erection. Some guy walk by in front of me and saw me and sucked my cock there. Now in September going to all male nude resort in Key West. I will try to control my penis but he won't listen to me for sure

You arrive wearing your bathing suit, you can take your cloths off when your on the beach. Most nude beaches the people there don't like cameras. You can walk around naked even with an erection, but once your there a while, you get used to it. I don't know of a Newd beach in central, but if your ever in north Miami, go to haulover beach where you can be naked. Google it.

I first went to a nude beach when I was touring Europe with another guy as a student. That was fun and I’ll post a blog. I’ve since been a few times in south France with my wife.
Sometimes they are private and you need to pay a small fee to go on the beach. Sometimes there are lockers for you to strip as soon as you get there and leave your clothes.
Don’t expect to see spectacular naked bodies. Often there are obese men and plump women with floppy tits. The gays are obvious, I feel their eyes on me instantly. Being there with a wife I don’t get bothered by anyone. Walking across the beach hand in hand with her I always get erect and it’s great feeling my hard cock swinging with my strides as guys ogle my naked wife.
We’ve never had full sex on a nude beach but she’s discretely hand jobbed me and nobody paid any attention.

you might just google the question, here is what I came up with at a website , near the top of the query result:
Only one sanctioned nude beach, but please to continue your resarch
to wit:
"Haulover Beach, 10800 Collins Ave., North Miami Beach, 305/947-3525.
Almost a mile of beach north of the northernmost parking lot is sanctioned as a clothing-optional beach. Patrollers arrest gawkers."

Well, as someone who has been to nude beaches hundreds of times, I'll do what I can to answer your questions. Here goes in the same order as you asked.

First about nude beaches in Central Florida, I cannot help you there. I live in California.

Cameras and taking pictures at a nude beach is a Major Faux Pas. My advice is to not take your camera. But if you do, be sure to get permission from anyone whose picture you want to take. I've seen cameras at nude beaches and have been photographed, not only nude but actively engaged in sex, but I don't have a problem with that and the photographer did get my permission.

Yes you should put a towel or a blanket down to sit on, not because of any rule of nude beach etiquette, but to keep sand out of your ass crack. Believe me, that ain't fun.

Now, about erections at a nude beach. They happen. What you should do about one depends on the nude beach.

Let's start with adult nude beaches. There are nude beaches where sex on the beach is de rigueur. In a situation like that an erection is perfectly fine any where any time. If you want to parade about with your dick at full attention showing off your hard-on, feel free to do so. If you want to fuck and suck on the beach, feel free to do so. Hundreds of times I've had sex on the beach, sometimes when there were people on a neighboring beach towel only a foot away. If you want to watch others having sex and jack yourself off, go right ahead.

Moving on to more family oriented nude beaches. Yes, erections happen there too and getting one is not a faux pas. Sure, an erection can be a sign of sexual arousal, but as every man knows the penis has a mind of its own and spontaneous erections happen. At a beach like this most men choose to roll over on their bellies or cover the erection with a towel, but neither is absolutely necessary. Erections are normal and natural and nothing to be embarrassed about or ashamed of. A man should NOT, however, call attention to his erection. He should just act natural and keep on doing whatever he'd be doing if he didn't have an erection. Most people will pretend not to notice.
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Whoops, I hit "submit" and I wasn't finished.

Is there signage? Only rarely. I have seen signs that said "nudity prohibited beyond this point", but these are the exception. Often one end of the beach will be nude and the other not. You can tell by the attire, or lack of it, what the custom is.

Are there changing rooms? I've never seen them. You arrive, spread your blanket or beach towel and strip down.

I think I've pretty much covered taking pictures at a nude beach. If you do take your camera, selfies are fine. Photos of others in your party with their permission are fine. BUT DO NOT TAKE ANYONE ELSE'S PHOTO WITHOUT PERMISSION.

Finally, about perfect bodies at a nude beach. No you do not have to have one to go, to be welcome there and to have a good time. Sure the beautiful bodies are nice to look at (DON'T OOGLE!), but when you get there you will see all types. So go, strip down to bare skin and have fun.