Hi, I know exactly how your feeling last year I left my 3 cats for the first time to go on holiday for a week. My mom and dad came round daily to feed them and they had their usual 24hr access to the cat flap, unlike me who spent a lot of time phoning back to check on them they were absolutely fine. I have just come back from another week away and this time I didn't fret as much and again there were no problems, so I would agree with some of the others stick with their usual routine, try not to worry too much and enjoy your holiday.