Need help with something ☺️

Okay well my boyfriend got me a promise ring and it’s our 1 year anniversary in November the 12th. And he said he’s taking me to a hotel then taking me somewhere for out anniversary and He’s not telling where he’s taking me and he knows I hate surprises he said it’s going to be fun and to bring a swimsuit and that I really don’t like swimming or going in water because my hair will go all curly and I’m self conscious about my body I’m slim dark haired and green eyes but that doesn’t really matter

So I’m saying can you please tell me what it is and he goes “ no you’ll have to wait and see”. And I’m like I don’t like surprises and he’s says yeah because you always find out hahah. So I’m like well he knows I don’t like swimming so why do I need a swimsuit so I’m a bit confused here what is my man planning.

Need some answers Girls ☺️☺️