We've just got the unexpected opportunity to go away for 3 days this weekend but I'm slightly worried about leaving our cat. He's 5 but newish to us - a rescue from the RSPCA. He'll have been with us for a month and our next-door neighbour will come in twice a day to feed, empty litter tray and give him a cuddle. He's not allowed out yet so will remain indoors while we're away, as he has done since he arrived. Do you think he'll be all right?!