If your 07 has more than 6000 miles on it, chances are good that if it were going to fail it would have already. Check your vin against the campaign chart because some of the early 07's were not even effected. Carrying a spare is probably a good idea but there's no need to run down to the dealer and delay your trip.
My 07 has 22,000 miles on it and I have no concerns about my EWS going south on the 3000 mile ride I am leaving on next week. My VIN is listed in the "campaign" but I'm really not worried. These things fail early in their life.
2007 BMW R1200GS Adventure
2009 BMW G450x