flights to Barbados

I'm booked to fly out on Friday 10 June to Barbados on VS035 - returning on the VS036 the following friday.
At the moment i've only managed to secure "not so good" seats - 37J and 37K going out.
Would anyone please be able to tell me if the flight really is that busy?
I've got about 75,000 Virgin air miles to use and was also thinking of upgrading to premium economy also - any ideas how I go about this please?
Many thanks
At the moment i've only managed to secure "not so good" seats - 37J and 37K going out.
Would anyone please be able to tell me if the flight really is that busy?
I've got about 75,000 Virgin air miles to use and was also thinking of upgrading to premium economy also - any ideas how I go about this please?
Many thanks