I've sent my STD's since we are having a DW in Key West. I've had a couple friends ask me the attire and I have absolutely no idea how to explain it to them! Our ceremony is on a beach of sorts; there's no walk into the water aspect. There's a sea wall but it's a little sandy. The reception is in this awesome solid brick fort so not on the beach. I want guests to be like business casual but comfortable since it is going to be 80 degrees. I don't want guests showing up in shorts as I'd like to keep some formality about it. The groom is most likely wearing navy dress pants, dress shoes, white button up shirt and possibly a tie. No suit jacket.
Do you think it's best to say business casual? Or am I overthinking this and people will just wear what they want?