That's why Mike I always keep a few extra pairs of 3D glasses charged and ready. Tonight we are doing another Gravity 3D showing too. I have 6 newer Optomas, 4 Monsters (though will be lucky to have two ready) and the Sony glasses that came with the 1000/1100ES. Oh and in case someone brings kids (not tonight though) we have two pairs of those kid glasses. We are expecting 7 people tonight.