I'm sure you can. You just need to do the following:
1. Know by heart the lag of your camera shutter
2. Know by heart when the 'next' fireworks are going to be shot (memorize the song, sequence and rhythm)
3. The use of IR remote shutter release is highly recommended
4. The use of tripod is a must
5. Find a spot at least 1 hour prior to Wishes is also a must
or you can skip addendum 1, 2 and 3, set your S2IS to Fireworks mode, and keep snapping regardless of rhythm and sequence, you'll bound to get an acceptable pic like mine too.
After all, it took me about 20 shots just to get 5 acceptable shots