1. Yes.1. ok, so entry to parks is no problem.
2. is there any way to test them to see if it will work for pictures, before you try get on a ride that takes pics?
3. oh & i suppose the Magic kingdom game is out of the question,, have to start all over?
This. Most everything I've read said the battery lasts about 2 years.From AllEars:
While there is a small battery inside each MagicBand that only has about two years of “juice”, any tap functions where you touch Mickey-to-Mickey (entering a park, making purchases, etc.) will continue to function long after the battery in it has died. However, long-range RFID functions such as in-ride photos will not work once the battery has died.
The batteries last roughly 2 years tho I've heard many reports of them still working at 3 years.