Okay, so assuming you have a full tourney, double elimination you would end up with 126 matches. Each match takes about 1.5 hrs to complete.
Most tourneys start at 12 PM to 1 PM.
So lets assume you get a total of 13.5 hrs from each table (max).
You would end up with 9 matches from each table (approx).
126 divided by 9 = 14.
So if it is a full field you would need 14 tables to get done that day.
So if you only have 8 tables the math says you could get in 72 matches.
A full 32 man bracket is 64 matches.
So with 8 tables one could get in 72 matches.
How does that equate to how many playes per table? 4.5 or you could round up to a max of 5 assuming that some matches get done a little faster.
Nice to think those numbers, but, tourney flow math doesn't work like that.
64 players @8 tables @1.5 hrs match full double elimination is gonna take you 27.5 hours.
You've got 10-11 rounds to play (one 1.5 hr time slot each) plus an additional 5-7 time slots for rounds requiring more than 8 tables (W1 = 4, W2 = 2, L1 = 2, L2 = 2).
Regardless of the number of tables available, no tourney finishes faster than the number of rounds to be played. A full double elimination 128 person tourney with unlimited tables has 12 or 13 (if double dip) rounds. That's the number of bracket columns from the first round thru the loser's side and back to the championships.
At a mean 1.5 hours/match, that's 19.5 hours of play. Noon or 1 won't cut it. And that's in a perfect world. Any sane TD scheduling times inserts a 30 pad at least every fourth round to keep things on schedule. If it's strictly on an "as available basis" you're nuts if you think your going to stay on schedule with a perfect 90 minutes per match. That's assuming race to 5 8-ball. Any of these numbers are obviously adjustable by length of race or type of game. 8-Ball avg is 10/game, 10-Ball 7.5/game, 9-Ball 5/game.
Also, the first law of tournament brackets is that no tournament moves faster than the slowest moving loser's bracket leg. And warning slow players is usually fruitless, since the damage is almost always done before you discover the problem.
At 1.5hrs/match, theses are the perfect world times - meaning no delays and no dragging legs:
128 players with 64 tables available: 19.5 hours
128 players with 32 tables available: 22.5 hours
128 players with 16 tables available: 32.5 hours
64 players with 32 tables available: 15 hours
64 players with 16 tables available: 19.5 hours
64 players with 8 tables available: 27 hours
32 players with 8 tables available: 15 hours
32 players with 4 tables available: 24 hours
Those are rough off the top of my head numbers, but pretty close. I've run enough tournaments big and small that I wouldn't promise a group of players anything faster. And I've seen soooooo many TD's go down the tubes by thinking matches will always finish on time. Riiiiiiight....
B