I remember those days vaguely, A few places that I can think of first aid but like I said I was told no when I asked could have been the CM. I know GR you can leave your phone and they will charge it for you ( they will give you a rain check and I felt safe leaving my phone there.), also I have heard stroller wheelchair rental will charge
ECV not sure if they will charge this. If you are eating at a sit-down restaurant ask your server if there is a table next to a plug and let then know why. I am sure you will not want this out of your sight but I think buying an extra one and changing it would with were ever you can find to charge it would be good/