Just out of curiosity: What are the prizes about?
The same person can win on two categories?
Typically the prize is an anime DVD and a convention bag of handouts and promotional materials, just like the people who come to the convention will get.
Once in a while I can have a mix of some an anime figurines as prizes and some DVDs. I try to match the DVDs or figurines to what the winners might like, if I can make a good guess!
Now, not only can a person recieve more than one prize, but also a single AMV can win one, two or more prizes. Typically the Best of Show winner is also the winner in its category, so it will get a double prize.
When a person wins two or more prizes, he or she will get a DVD (or figurine) for EACH winning entry. When an AMV wins two or more prizes it can get two DVDs or it can get a two-DVD series, or a thin-pack set, or some other "multiplied" prize, maybe a DVD plus a figurine from that show.
I like giving DVDs away the best because it is fuel for next years AMVs, right??
GOOD LUCK TO ALL PARTICIPANTS !!