I've taken 2 bridesmaid dresses here to be altered and both have been done very well. The dresses took about a month each, which I think is standard. If I had needed something sooner, I'm sure he could accommodate it.
His store hours are pretty good: 6AM - 4PM (M-F) and 6AM -12PM (Saturday).
Only con is that it's cash only, so make sure to swing by the ATM before you pick up your garment!