I'm glad you've enjoyed the pictures, Jack, and hope you will visit Switzerland in due course. I'd be delighted to help you find some of these wonderful alpine species, though I have to say the boys were extraordinarily lucky with the weather on this occasion, and a short July trip to the Alps risks equally being a total washout (ask Paul)!
The public linking of species to sites is not something I am free to do, for a whole host of reasons, not least among them being that I benefit from privileged information from various sources and am trusted not to release it. There is general distribution data available here:
http://lepus.unine.ch/carto/
The policy is for records to be published to 5km square precision, though many of the actual records are now to the nearest 5m, with the aid of GPS. I'm sure there are people prepared to reveal sites to greater precision, but I will stick to the public policy of the CSCF (Centre Suisse de Cartographie de la Faune) which, as I say, shares its more detailed information with me on trust.
As for the level of athleticism necessary, it is true that some high species require considerable energy expenditure, at my sites for them at least. That said, other species abound even in the car parks of well-known alpine passes. Taking my parents (both now on the far side of 75) as an example, I know that if they'd come with us on our recent trips they would have seen Eros and alpine blues but probably missed out on Cynthia's fritillary and dewy ringlets.They would have had cranberry blue but perhaps not glandon blue, &c. I obviously don't know your exact fitness levels, but there are excellent alpine butterflies within reach of all.
If I were here when you came, Jack, I would be delighted to show you many of these butterflies, and if I were not I would gladly point you at excellent general alpine sites. All I can't do, for reasons I hope you understand even if you don't agree with them, is give directions in a public forum to particular species, particularly such sensitive ones as the
Maculinea. For true Alpine species, you can't go much wrong with a July trip, and many of them are still on the wing through August (the higher the later).
Guy