At FSH they give you the option of charging your cc via US D rather than euro - that way a conversion fee isn't applied by your cc company
This is a great idea! I wonder if they'd do likewise for other currencies...
Please check with your credit card company on charges, from what I understand that being charged in US$ at the retailers rate is not as good as to allow your credit card company to do the conversion for you. The advice on the web recommeds that you be charged in the local currency. For example, when I was in Fort Lauderdale, my Amex rate (then ) was $1.37 to the Sterling but the Hilton rate was $1.21.