I'm going to Mallorca, Spain in a week. Any suggestions as to what to do there?

Enjoy the sun and watch out for tourist traps.

It is nothing like Mexican. It is before anything touristic and more European.

checkout: http://www.lonelyplanet.com/spain/mallorca

What I meant with Mexican was the cuisine. Is it alike?

I don’t think so.
Actually in my memory, it is Mediterranean. Think of a mix between Greek, French and Italian. A lot of seafood and olive oil. With of course a lot of Spanish influences.
For instance, see: http://www.indigoguide.com/majorca/food.htm

This might help you:

http://www.holidays-majorca.co.uk/

Don’t forget to take sunscreen with you, the temperatures are very high :-)

Stay away from swine flu breeding grounds e.g. crowded parties sharing buckets and glasses. Go to calmer areas in the north east.