As of now, there is no "Weekend at Bernie's 3." The franchise consists of the original film "Weekend at Bernie's," released in 1989, and its sequel, "Weekend at Bernie's II," released in 1993. While there have been discussions and rumors about a potential third installment over the years, no official project has been confirmed or produced. The original films remain cult classics, but fans have yet to see a continuation of the story.

Yes, in "Weekend at Bernie's II," a body double was used for the character of Bernie Lomax, portrayed by Terry Kiser. Kiser played Bernie in both films, but due to the nature of the character's lifeless state, a body double was sometimes necessary for specific scenes. The film relies on comedic elements, including physical comedy and the visual gag of a corpse being treated as if alive, which required careful choreography and the use of doubles to achieve the desired effects safely and effectively.

"Weekend at Bernie's II" primarily takes place in the Caribbean, specifically on the fictional island of St. Thomas. The film follows the characters Larry and Richard as they attempt to retrieve Bernie Lomax's body, which they believe contains a hidden treasure. The setting includes various tropical locations, showcasing the vibrant island atmosphere as they encounter various comedic situations while trying to navigate their bizarre circumstances.

There are two movies in the "Weekend at Bernie's" series. The first film, "Weekend at Bernie's," was released in 1989, and the sequel, "Weekend at Bernie's II," came out in 1993. Both films feature the characters Larry and Richard trying to maintain the illusion that their deceased boss, Bernie Lomax, is still alive, leading to comedic situations. The franchise has gained a cult following over the years.