Call me impatient but I'm having a tough time waiting for Family Ski to come out here in the UK. It's due on June the 13th but I don't quite understand the logic in that Wii Fit was launched in the UK before the US yet We Ski has been available across the pond since May 13th and as far as I can tell, it's the same game.
So if you're in the UK and really can't wait, you could consider spending a few pounds on Datel's Freeloader for Wii and then buying the US We Ski. Freeloader's basically a utility that will allow a PAL Wii console to play American NTSC games so unless you've imported your Wii from the US you're going to need Freeloader to play We Ski and other US games. Be aware however that this is an unofficial utility but since it doesn't require any console modifications, you can't damage your Wii. Something else to bear in mind is that future Wii firmware updates may stop Freeloader from working but since this little utility is helping to sell more Wii games, I don't really see why Nintendo would want to disable it.