I found booking a hotel using the vouchers incredibly difficult-all dates unavailable. However,myself and DD are currently in Tenerife courtesy of tesco the amount of cash I spend in a supermarket.Spent a looong time amassing them but holiday has only cost me spending money.
How about converting them to airmiles to pay for hotel and airport parking? £2.50 = 60 miles is that any good? Or Travelodge have sale on at the mo room at Gatwick airport on Boxing Day night is only £19 HTH