We've only had 1 negative experience with them in about 5-6 trips. I don't have a problem with them at all. They are usually so much less than the others that I'm willing to take a chance that there may be a monstrous line.
Before you use them again, sign up for Quicksilver, no lines, no waits, insert your card and you are outta there.
It is free. Go to the Alamo website, click on business partners and go from there.