Thanks so much! I guess I'll just pack both G adapters and hope that one works. I know that our hotel has adapters as well, but I worry that whichever type the concierge provides might not be compatible with my camera's AC adapter, since it slides directly into the back of the unit. I'd be heartbroken to find that I couldn't use my X-100 for photos on the trip because I was unable to charge it.

It seems that "L" is the standard adapter for Italy, but strangely, I don't seem to have one labeled as such; despite it looking almost identical to my "G" adapters. I wonder if each manufacturer uses different letters and codes?

I'm guessing that plugging either of the G adapters (JC A-2 or JC A-4) won't put any of my electronics/gear at risk...

As for hairdryers, I'm definitely using the hotels. We're staying at the Gritti in Venice so I'm not worried about any of the in-room amenities.