Cats do not like change environment so it is better to keep them home. I left my two cats for 10 days at home a year before - no problem. What you can do:
1. Buy an automatic food feeder (I bought it from Canadian tire)
like this: [ame="http://www.amazon.com/Automatic-Electronic-Programmable-Portion-Control/dp/B004SBSNB0/ref=sr_1_2?ie=UTF8&qid=1360953517&sr=8-2&keywords=automatic+cat+feeder"]Amazon.com: Large Automatic Pet Feeder Electronic Programmable Portion Control Dog Cat Feeder w/ LCD display: Pet Supplies[/ame]