If you want to see the ruins on the mainland, you can book a tour with a number of tour operators on Caye Caulker. Don't know of anyone that runs out to Lighthouse Reef on an overnight camping trip. Gas gets to be expensive @ $5 us a gal. We went out to Long Caye @ Half Moon Caye for 2 days of fishing and that cost about $1500us that included 2 fishing guides, food and gas. We stayed at Bluhole lodge on Long Caye. Not sure what they charge.