We have always picked up our tickets form the will call booth at the grounds.
The problem with getting tickets for Tampa however is that when they built the new ground, its capacity is smaller than the older stadium snf because they are doing well, the whole ground is filled each week with season ticket holders (with quite a long list of people waiting to join) so loose tickets are more scarce than rocking horse doo doo.
As an aside, its strange to see the Huston astrodome again on the TV, as we went to quite a few games there when the Oilers used to play there..