So, off to France in a couple of weeks, so I'd like to find out whether I can use my Vodafone USB broadband modem over there, and what the charges will be.
Can I find out from the Vodafone website? No I flipping can't! It is perhaps the most disorganised customer-focussed website I've ever had the misfortune to get lost in.
Can I email them via the contact form? No I flipping can't! I need a Vodafone mobile phone number to do that!
Update! Turns out there's a forum at the Vodafone page, where I found a link to this page. Not cheap, but OK for a spot of browsing, I suppose.