Repetition on drums are usually a sign to pass on the song, but this song is an exception.
There's two primary patterns in this song. The first one is a simple slow beat charted with the green crashes that shouldn't trip even hard-expert transitional drum players. Nothing too hard here.
The other one, the more important one, is sort of like a disco beat, except it goes in the pattern of red-yellow(bass)-red-yellow(bass)-red-yellow-red-red-repeat, at 8 NPS. It's pretty repetitive and it shows up during the choruses and pretty much the whole second half of the song, but it's a lot of fun once you get the hang of it. There is also variation around the place, so it doesn't feel too repetitive.
On another note, the second pattern actually does not change on pro drums. Not only that, but if you listen to the song, you'll realize that it's charted correctly as well, surprisingly. The snares you hit with the left hand would have to be hit lightly on a drum cover, but it's still the correct chart, and the legacy drum is actually not a disco beat.
Great song, good drum chart. Definetly don't skip this on RB3.