I like to go for a walk to stretch my legs. Maybe get a coffee if I'm tired and bathroom if I need. I've played live mtts where people just sit there and wait but I just can't.
Most Live games I have played in you are forced to leave the Table during a break and the dealer is the only person allowed to stay and he uses that time to check the deck, and help the T.D. change chips, smaller denominations are rounded up etc.
The dealer only gets a break during a session when they exchange dealers on a rota system, as for myself I usually go for a breath of fresh air, or a bite to eat, or a drink at the bar, sometimes when I was running deep I would telephone my Wife to let her know how I was doing, but she really didn't care that much, she just liked to hear my voice, Women!
When the fun Stops, STOP!