From your other post I see you are traveling in September which is low season. This would be my advice -
For £70 (relatively cheap) I would recommend you upgrade to oceanfront to guarantee you can get one (over 1/3 of the rooms at BBB are oceanfront - but you don;t want to risk not getting one on your honeymoon).
Of the oceanfront rooms - the best of the rooms are for club premium which is typically quite a bit more to upgrade. For us - it is $70 to get oceanfront and $400 to go to Premium as an example. I don;'t recall last year what the cost to upgrade was at the hotel, but I remember thinking it was a cheaper. I don't think there is a chance of missed availability for upgrading to Club Premium when you are there, and I highly suspect in low season it is cheaper so I would wait to book that.
Couple of other notes - don't expect any free upgrade (and for certain not to club premium) and resort credits really don;t get you anything in the end - prices will be inflated to account for it as everyone gets the credits.