For me it's a safety first idea...
If you're not sure and don't have a rule book handy (orr aaa's mobile phone number...

), then err on the side of caution. Our game is dificult enough without incurring penalties as you go...
We know we can not test the sand in any way. This could well be why we see so many of the tour guys n gals taking their practice swings before heading into the pot....
It is entirely fair to say I hate sand, unless I have a surf rod and not golf
clubs with me at the time...
Cheers
