I've used them twice and would go to them first the next time. I have also tried AAA ta twice and both times had problem with booking.
VTG is very good site to research prices and see lots of last minute cruises. Their prices are very straight forward with no other fees added in except taxes. Can't say same for our ta, where add ons were lot higher. But we do miss not getting the little freebies.
I get about 25 emails a week from various discount online travel and cruise sites and still think VTG is one of the easist to use.