Hehe I bet the trick to not losing half of it is to but the bottle in a cup...lol, pop it open and let the overflow go in the cup... save!...lol
I noticed Eri wasn't in the previews they showed, it was all miki, risa, ai, sayu, and reina... maybe they'll have jun and lin show up for a secondary group? jun, lin, eri, koharu, and aika?... maybe its still too early for that... technically are they considered part of the group? I mean they aren't in the pictures and stuff till the next single so I'm guessing we may not see them until they release something so that they can be added to pictures and stuff.... but having 2 groups of 5 next week would be a fun idea...