Planning to climb Mont Blanc in late July and have a couple of novice questions about acclimatisation. We have basic winter skills, but earned in Scotland so never designed an acclimatisation programme before, and are of good fitness. We have five days before our Gouter hut booking. Based on our skill level we'll be sticking to easier routes, but would like to work in skills training alongside acclimatisation program (I know Mont Blanc is technically easy, but we'd like to use the opportunity to improve our skills for other objectives). Planning on staying in Argentiere when in the valley.
1) How important is it to sleep high? If we were to stay the Argentiere hut or Albert prem, then come back down to the valley for one or two nights - is that going to undo the acclimatisation we've done? Does it have to get progressively higher without breaks?
2) On a budget so would prefer to avoid paying for expensive huts where possible. If we were to stay at one of the above huts then do a route at the Aiguille du midi, but then come straight back down from that - is that going to be of any use at all, or would we need to do an Aiguille du Midi route then head for the Cosmiques hut for it to be of any use?
3) Having trouble finding suitable objectives in the 4000 - 4500m range
4) I was aware the Gouter hut needed to be booked well in advance - how about other huts? Can I just leave them till the last minute?
Post edited at 11:25