checking the bike

My son is having a visit to Centre Parcs and has asked for two of the bikes we have in the garage.  
When they were lifted down one appeared to have a puncture so a quick trip down to Halfords who promptly replaced the inner tube in less than ten minutes.
Back home G decided to give them a clean and oil - so not much else for our son to do.  He will be over soon to collect the bikes and deposit the grandkids for a sleep over. Which, I wonder is the most important!!
I hope he realises that we DO NOT want the bikes back.