Yes, you must disembark the Disney Skyliner at the Riviera/Caribbean Beach main hub if you are traveling between the various lines. The Caribbean Beach station serves as the central "Grand Central Station" for the entire system. If you are coming from Epcot and want to go to Disney's Hollywood Studios (or vice versa), you must exit your gondola at the Caribbean Beach station and walk to the appropriate loading platform for your next destination. This is because the cables for each route (Epcot line, Hollywood Studios line, and the Pop Century/Art of Animation line) are physically separate loops. While some gondolas pass through the Riviera Resort station without requiring you to exit, the Caribbean Beach hub is a mandatory transfer point. The process is usually very quick and efficient, with cast members directing guests to the correct queues. It is designed to handle high volumes, so even though you have to switch, the wait time is typically minimal outside of park opening and closing peaks.