So much for working as a team?
BOAC, if you fly into the airport where I currently work, I will tell you where you should plan to vacate as it will be easier for your taxiing back to stand.
Of course you can use any exit you wish, but it may end up being more work for the ground controller and an additional ten minutes for you to get to stand.
As in the original posters query, there may be a valid reason why a controller will tell you to vacate at a specific exit, (such as a cessna blocking an exit you likely to use) its not guesswork, there is a reason why.
If the controller doesnt say anything, then by all means, choose any exit you wish.