It helps if you just hold the trigger in, rather than pulling it for each shot. It will fire at the same rate either way (about 1 a second), whether you keep "firing" or hold it in.
I have been riding Buzz since it opened, and it never occurred to me to see if it would keep firing if you kept the trigger held in. Thanks!
I like both Buzz and Toy Story Mania. I think Buzz's appeal over Toy Story Mania for me is that it is one continuous game, rather than a series of individual games. I have only ridden Toy Story Mania once, and I really enjoyed it, but I felt like the individual games went by way too fast. At least on Buzz you can get better and adjust your strategy over the course of one ride.