Eventhough you already said the tourney would break even, I think we could save some money by awarding Taco Tico coupons instead of medals. Gentzler can print up coupons in varying degrees of value:

Champion-All you can eat Taco Tico, plus a roll of toilet paper
Runnerup-Half dozen combo burritos, plus a roll of toilet paper
3rd-4 sanchos, half a roll of toilet paper
4th-2 sanchos, and the other half of the 3rd place roll of toilet paper
5th-2 tacos, 6 squares of toilet paper
6th-1 taco, no toilet paper required at the restaurant, you should be able to make it home before needing any........