spent 2 weeks, of a 4 week trip, around the alps last year (based in bourg) amazing place. i managed to bag quite a few of the classic mountains without upsetting the family by doing the following:
prep the wife in advance “darling this is a once in a lifetime opportunity, its something ive wanted to do since i was a wee boy”
Get out early – i left to do croix de fer at 5.30am. You miss the traffic (which is fairly light anyway), miss the midday heat and get back to help with the kiddies breakie.
take them up the hills – after i’d ticked them off we all piled into the campervan and drove to the tops, they loved Alpe d’huez as we could all do a wee walk out from the top. there is shed loads to do for families
buy your wife something – mine had always wanted a ‘cow skin’ rug, cost me a small fortune but i got her one as we were leaving.
finally, dont be too daunted by the hills, if your are reasonably fit and pace yourself all should be well. i actually found that once in you get in the mindset they hill were not that bad.
enjoy