Robert, thanks for the detailed info! As of now, Tuolumne Meadows Store, Reds Meadows, and MTR are my resupply points.
Konrad, I couldn't find anything to disagree with on your post so I will be sticking with the drops. Thanks for the input! I think I saw something shiny I didn't have and wanted it.
As for AM usage, I think there is quite a bit of disagreement and anecdotal evidence on this site. My normal routine is to "camel up" quite a bit, chug maybe 1/3 liter or more and refill and treat. I wait at least 30 minutes, but I find I can go much longer than that without really "needing" a drink.
The bottles are available at US Plastics, cheap.
http://www.usplastic.com/catalog/item.aspx?itemid=25040&catid=530
There is a kit you can buy from gossamer gear that has everything you need to get started, but no pre-mix bottle. I used a well cleaned Clear Eyes bottle, and keep it out of the sun. The droplets are not the same size as the AM bottles, do a test and see what the ratio is. My bottles take 10 drops instead of AM bottles 7 drops, and the clear eyes is back to 7. I wrote the number on each bottle so I don't get dumb. 10 drops of each into the premix bottle, then 14 drops out of the premix bottle per liter.
I have never heard that premixing is an authorized use, but Mike C! is outdoors a lot more than me, and it works for him. So it works for me.
I premix enough for 3 liters every day and rarely use it all. It usually goes in the bottle so I have clean water first thing in the morning.
Big downside that I literally just experienced was that it doesn't do much about the taste. I still taste pond water and sulfur from a over-nighter I just got back from.