Description of courts:
I've talked to the convention center earlier this year, this was their response:
"An Exhibit Hall would work best… the Halls open onto Houston and each has a roll-up door. Bikes could be delivered or ridden right into the room. The floor is concrete. The smallest hall is 30,000sf, Exhibit Hall A, which rents for $1500/day. We require liability insurance for all events…"
The venue would cost $4,500 for 3 days, I'm not sure if that is a inhibiting cost, but it seems reasonable for a larger tournament with sponsorship donations. With this we would have 'real' bathrooms (no port-o-potties!), a kitchen area with bar and (of course) central heat and air… and did I mention it was indoors? Courts would need to be built.