This year we had 'Speedos' due to his choice of maximum tan swimwear.
Trish, a lady who was the pot model of my friends sister.
Galoot, he was a big Swedish looking bloke, who got on my nerves at the melon counter. I was standing behind him waiting my turn to get a piece of melon when he went through every slice on the plate whilst he chose the best 10 slices.

Ralph. Hubby chose the name Ralph for an oldish bloke with silver hair and mohogany tan. Who came to dinner each evening in pink trousers. He became Ralph Lauren. ('Ralph' was also in the room opposite ours on the other side of the pool. Each evening, after his shower he'd stand naked on the balcony

Clout. This was a young Spanish family, mam, dad and two little girls. One evening one of the little girls knocked a bottle of water over on the dining table flooding her father's, just filled up plate, with water. He shouted at her then gave her a smack, so he became Clout.
Is it just us and my friends who attach nicknames to people on holiday whose names we don't know?