Although it's a couple of years since I last travelled with VS, back then certain seats ie extra legroom etc were available via on-line check in 24 hours before the flight. I flew Gatwick to St Lucia on G-VROY, which was config 2 on seat guru. When checking in 24 hours before, the foremost economy seats between doors 1 & 2 became available also, so sat in seats 22A&B. This was brilliant as it was like a very small private cabin, a lot quieter, and refreshments / meals were served to us first. Although there was no more legroom, you could get your seats back without disturbing anyone else, and I'm sure they went back a bit further than the others..... The window seats beside the exits can be good, but the slides jut out infront of you, so if you stretch out you have to at a funny angle which can actually be uncomfortable. Basically, get online exactly 24 hours before and see what else is available, but I highly recommend 22 A-C!