If you are asking whether to buy a timeshare or stay in a hotel we take the middle ground by renting a unit in a timeshare through Expedia, Travelocity or similar sites. The cost is quire reasonable and the unit you get is larger than a hotel room but I don't think that it's as expensive as a time share when you figure in the initial cost, the maintenance fees and being locked into a specific time period. We have stayed at the Flamingo, Royal Palm, Divi, Sapphire, Palm Court over the years and find that the ability to pick and choose the property and the dates according to our schedule is much better than being locked into a specific time period.

As a bonus if you aren't using FF miles there can be a significant saving over booking the flights and lodging independently.