Yes.
Even with only 2 shows a day most of the time, both of them usually fill up. At 5,000 people each, thats a good chunk of the park's daily attendance.
DHS needs this show, and personally I think it needs the Backlot Tour too until more attractions are created to eat up capacity and give people more to do.
That said, since LMA is probably going to stay for a while, I would like if it the show was tweaked a little to have better pacing and less "down time"... and if they add that 3 minute Lightning McQueen segment from Paris, its only going to hurt the already sluggish pacing of the show. It's biggest problem, IMO, is that it doesn't build up the action properly. Some of the best sequences are near the beginning of the show, and the finale isn't a good enough payoff. Also stuff like the "remote control car" segment that just aren't that funny or entertaining eat up minutes in between the action segments, which are the whole reason you're there in the stadium in the first place to see.