Your fish will be fine if not fed for 2 weeks, if your really worried get an automatic feeder. Don't buy those feeding blocks as they contain loads of rubbish including ash and they pollute the water.
Do your usual water change a couple of days before you go and feed as usual, If you haven't already got an automatic timer for the light get one as you don't want to leave the light on as it will cause algae to take over.
Do you have real plants in the tank as the fish could nibble them and pic food off them.
Emma