AITA for wearing sunscreen in the shower?

This happened when I was 15-16 years old.<br><br>I'm a pretty fair skinned white person who is very sensitive to the sun. Any time I go outside for a long period of time, especially without sunscreen, I get pretty bad burns.<br><br>One of my friends in high school had a beach-themed birthday party that lasted for 2 days. The second day was at this beachside resort of one of his family friends. I hadn't been able to come the day before since I didn't have a car and my parents were busy. I only had my friend's dad pick me up and drive me up to the party. <br><br>This meant that I was coming from a closed indoor space to 3 hours outside in the direct midday sun. I didn't have a car to drive to a store to buy sunscreen before the resort, so I packed some specifically for the shower. It was a cheap dollar-store sunscreen and I applied it with warm water, not a loofa or body wash. It went on pretty evenly and did its job for the next few hours we were on the beach and in the water. <br><br>The problem came when we wanted to go for a swim in the community pool. The owner didn't want the sunscreen from everyone to stain the pool, which made sense. I told him my situation about not being able to buy sunscreen and my planned work-around. He told me it was my fault that I didn't stop at a store and that I was being overly dramatic about my burn risk (he had no problem with me hanging out in the shade by the pool, just not going in the water).<br><br>I was pretty upset and didn't want to ruin the party for my friend and the other invitees. I told him that I couldn't go in the pool that day under those conditions and was going to head home. The birthday boy said I was being dramatic and ruining his party. We had a minor argument with him about that, but I got a ride back with another friend who had driven and spent the day just grabbing coffee and studying at a café before someone else drove me home.<br><br>My parents were pretty furious about this when they got home, but still think it was my fault for not going to a store on my own before the party started. It's been a point of contention for me ever since, especially since all of my burns were from hanging out in the shade.