Does anyone have experience traveling to South Africa in luxury?

My fiancee and I are looking into honeymoon destinations and are intrigued by South Africa. Have you ever visited South Africa for a vacation? Being our honeymoon, I'd like to be able to stay at a fairly luxurious hotel/resort. Can you suggest any things to do while in South Africa, or nice places to stay? Dangerous places to avoid? Are luxury hotels numerous or all-inclusive? Any insight would be very helpful! Thank you!