Ocean Front Units at Marriott Aruba Surf Club

I currently own two Gold 2B/2B Ocean Front units and one Platinum 2B/2B Oceanside unit at the Marriott Aruba Surf Club. I love the resort, as do my children.

I'm considering selling one Ocean Front unit and my Platinum Oceanside unit to purchase one Platinum 2B/2B Ocean Front unit, thereby consolidating the total number of units I own to two.

My concern is not being able to reserve the week(s) I want due to the fact that there are a limited number of Ocean Front units in the Lighthouse building. (Friends purchased a 3B/3B unit - limited number available - on the property and haven't been able to reserve the weeks they want.

Any information you can provide would be appreciated.