Opens, Age group tourney or NTRP level stuff?
In my experience: Which is only 2-3 tournies per year
Expect wide ranges in ability ... Lots of 1st round blowouts (hopefully you are the blower and not the blowee, or do I have that backwards?)
Some tourneys are exceptionally well run ... some are run exceptionally poorly ... I have rarely found many in the middle between those two extremes. Remember which is which for next year.
"You should be playing linebacker, not singles."