Should I wear a bathing suit directly in my room or change clothes at the seaside when I go swimming in Sanya seaside hotel?

Go swimming in Sanya seaside hotel, maybe change clothes at the seaside and swim in a swimsuit. People will say, there are no freaks, so take off your shoes when swimming. But then again, even if you go swimming in a swimsuit, the hotel won't directly talk about you unless there are regulations. Have fun!