Timeshare service companies Interval International and RCI recently added a number of existing and to-be-built resorts to their networks of affiliated resorts. Here are a few:

• Kur Hulanda Vacation Club on the island of Curacao in the Netherlands Antilles selected Interval International as its exchange provider.

• RCI added the Parkside Resort and Parkside Golf Villas in Williamsburg, VA to its network. The 784-unit resort was named an RCI Gold Crown Resort and will be part of the RCI Points program. The 40 fractional units in Parkside Golf Villas became part of The Registry Collection, an RCI affiliate company.

• Westin Lagunamar Ocean Resort in Cancun will become part of the Interval network as it opens beginning next year. The property, which at completion will have 296 two-bedroom lock-off units, is the former Sheraton Cancun, which is being reconstructed into a timeshare resort.

• Planet Hollywood Towers by Westgate, under development on the Las Vegas Strip, will become part of the Interval International system. When completed, the 50-story tower will have 1,200 vacation ownership units.