We are flying out 22 November for 2 weeks and I was able to log onto my booking and choose seats for both legs of te journey yesterday, the site often comes up with a message saying that they can't find the booking but once you put the flight number and date in if booking is open then it finds it immediately. Sorry I can't give you much advice about Virgin as our first trip with them will be 26 of this month, (usually travelled British Airways but having had to wait for 8 hours last time on our return to Gatwick to fly up to Newcastle we decided that at least getting the train back from Manchester we'd be moving whilst napping!!) we were just keen to try to get the 2 seats on their own towards the back of the plane so we don't disturb anyone else if we want to get up during the flight.