Camel safari is not an option at Nagarhole. If memories serve me right, then they only offer Jeep Safari rides to the forest area. However coffee plantations are aplenty and you can easily arrange a guided to tour to one of them through the hotel guys.
Here are a few popular tourist attractions at Coorg -
1. Abbey Falls
2. Namdroling Monastery
3. Iruppu Falls
4. Burude Falls
5. Talacauvery
6. Honnamana Kere Lake
7. Raja's Seat View Point
8. Madikeri Fort
9. Tadiandamol Peak
And a few activities that might interest you -
1. White Water Rafting at Upper Barapole River.
2. MicroLight Flying.
3. Trekking to the Tadiandamol and Brahmagiri Peak.
4. Overnight Camping near the Harangi Dam.
Hope, the info helps.
Regards,
Deb