I think this should cover most social exigencies. Nothing that I won't enjoy the company of: nothing too valuable; nothing that anybody else is likely to be wearing, except perhaps the Timex Mercury but it is too beautiful to leave behind......
(nothing that I will wear whilst surfing).
It's a good start:-
Pierre Cardin Espace
Casio MQ 48
Braun 4 789
IWC cal 64 and 76.
It's important to not feel cut-off from ones obsession when holidaying, I think you will all probably agree.