Yes, both the places are worth visiting, and are one of a kind.
The Dubare Elephant Camp allows you to closely watch the elephants and know about them. There are about 150 elephants in the camp, and the visitors can watch the elephants getting bathed and trained by Mahouts.
Apart from this, one can also take a coracle ride on the Kaveri River in Dubare Elephant Camp while spotting peacocks, sloth bears, wild dogs, gaur and even a crocodile.
The Bylakuppe is also one of the most visited spots in Coorg that gives you an opportunity to witness the biggest Tibetan settlement in India. The Golden temple, also known as Namdroling Monastery exhibits the typical Tibetan style architecture and lets you explore the Tibetan culture.