Of course, we can try hundreds of watches at our big GTG. That's cheating.
But if you meant personal watches worn by the owner, then I may have done about 10 over a day during the SIHH or Baselworld shows. But that's a "working" day.
I changed watches for each brand booth that I visited
It shows respect for friends at the brands.
For off duty private use, I think 3 watches is probably the most in one day.
Regards,
MTF
PuristSPro GTG
PuristSPro GTG
PuristS GTG