1. Rose Island is a small, uninhabited island located off the coast of Nassau, Bahamas. It is known for its pristine beaches, crystal clear waters, and diverse marine life which makes it a great spot for snorkeling and scuba diving. There are also a few historical and cultural attractions on the island such as the ruins of an 18th-century British fort and a lighthouse built in 1943. Additionally, Rose Island is a popular destination for a day trip or romantic getaway.

2. There are no fixed working hours for Rose Island as it is not a commercial establishment. However, there are tour operators that offer day trips and excursions to the island. The phone numbers for some of these operators are:

- Bahamas Adventures - +1 242-427-3643

- Sandy Toes - +1 242-363-3060

3. The cost of a day trip or excursion to Rose Island will vary depending on the tour operator. Some operators offer all-inclusive packages that cover transportation from Nassau to the island as well as food and drinks. The prices for these packages can range from $100 to $200 per person. Alternatively, visitors can hire a private boat or take a water taxi from Nassau to Rose Island, which will cost around $50 to $100 per person. It is important to note that there are no facilities on Rose Island, so visitors should bring their own food, water, and other necessities.