Visiting nude beaches while on holiday

Early this year I went up to Byron Bay for a holiday and googled the nude beach to go and enjoy the sun as nature intended it to be enjoyed. On my first visit I made my way along the beach and after passing the nude bathing signs started looking for a place to lay my towel and enjoy the sun. I had a book and plenty of time so was looking forward to relaxing in the warmth of the sun and enjoying being naked in nature. Those who do so will understand how great that feels.
There were a few people already on the beach so I tried to find a spot where there weren’t too many people and decided on a spot a little ways away from a couple who were in the water having a swim. I applied some sun screen and then read my book for a while and didn’t really pay attention to what was happening around me on the beach. After a while I sat up and looked around and the couple that were swimming happens to be coming out of the water and back to their things on the beach. They looked to be in their mid 20’s and both had great bodies and the guy was walking back to their stuff with an 80% hard on that was both impressive and showed they’d been having some fun in the water. They toweled off and laid down to chat about 20 meters from me and I didn’t think much of it. Shortly after this I realized that the day was super hot and the sun scorching and I needed some shade. So I picked up my thing and moved over to the only shade available which was about 5m from the couple to my left. As I moved over I could see them making out and they didn’t flinch or change was I moved. Once settled I looked over to their direction only to lock eyes with the female who proceeded to slide down her towel and devour her partners cock and start blowing him right in front of me. I was transfixed watching her blow his hard cock and continue to look over at me while doing so. I knew she was excited by knowing I was watching her suck him and probably also thinking about how hard my own cock was getting because I was watching her pleasure him. They were so close I wanted to go lay right next to them but didn’t want to a weirdo so just watched from where I was. Eventually the got up and moved towards the dunes which might have been an invitation but I wasn’t sure. It was still a great summer afternoon.