Merpeople, you didn’t real care about mermaids or merman but your girlfriend loved them. She had loved mermaids since she was a little girl, she had seen every mermaid movie or show ever. She even read a few manga about mermaids and while there was no way you would admit this she even had a few sexual toys involving mermaids. So maybe love was too weak of a word for how she felt about mermaids, maybe obsessed would have been a better word.
The convention center was covered with multiple booths, some selling rare mermaid themed items, some had sign copies of mermaid manga or other media. There was a booth selling mermaid and merman charms and of course mermaid/merman tails and monofins.
There was even a large pool which had to been two stories at least set up and some professional mermaids and merman (which was a crazy idea to you) performed tricks for people to watch. While others tested out new fins.
The one good thing about this whole thing was that there where a lot of good-looking women walking around in bikinis. There where of course men but they breakdown was at least 3 women for every single man.
“So where do you want to go?” you inquire to your girlfriend.