Clubhouse time limit?

I'm off to New York in August and I'm on the VS009 leaving late afternoon,I live in Guernsey and will be getting the red eye over so I should be at Heathrow by 9am.
I'm guessing that there isn't a time limit in the Clubhouse but it does seem an awful long time to be there so just wanted to check?
Also, what do you reckon my chances are of being moved to an earlier New York flight??
Any advice much appreciated!
Cheers
Tom
I'm guessing that there isn't a time limit in the Clubhouse but it does seem an awful long time to be there so just wanted to check?
Also, what do you reckon my chances are of being moved to an earlier New York flight??
Any advice much appreciated!
Cheers
Tom