When All Else Fails..... Begin To Drink & Cry
The biggest problem that I encountered over the years, were players that were absent when their matches were called. They'd be in the gameroom, outside in their car or left the premises to go get something to eat,etc.
I finally made announcements at the player's meeting that I would NOT (and I emphasized NOT) go searching the bathrooms, parking lots, surrounding restaurants,etc. looking for them and if they didn't show up within 5 minutes of their call, then they would go 'on the clock' and face loss of games (after another 10 min.) and eventually their match.
It's important to stress NO cellphones during their match (enforce a Penalty) and no whining, sharking or yapping with railbirds while their opponent is at the table. Players will test you and try to get away with whatever you allow them to.
As others have said, make your call and stick with it and "You run the tournament, don't let IT run you". Try to enjoy it, I've seen it turn very stressful for some TD. Twenty players, will have twenty opinions on how THEY think you should run the tournament and what the rules should be.
Doug
Edited to add: Be sure to list your current and upcoming tournament information in the "Tournament Announcements Forum" here at AZB....
.