Will do! It’s pretty handy having multiples. I keep 3 all in about a 10 foot long line. Yep! It’s automatically added for those who order by the end of Christmas. I believe so. The prototypes at least were all deemed extremely smell proof. And they didn’t have the o-rings like the final model does. Aluminum. Yes I’m not sure exactly how big the storage chamber is. But you can fit a cap in there. So it’s a pretty good size.