Belle-Mare is the largest and most popular beach of the East coast. As it is well enlightened at night and much parking space is available, it is the perfect place to camp, jog or walk while watching the sunrise.
While the West is widely popular and inhabited, the East remains wild and underdeveloped, thus it is often difficult to plan activities there. Belle-Mare being the only popular beach of the East coast, it is also the best place where you can safely camp and watch the sunrise.
Camp on the beach or find accommodation in the area. Don't drive in the East at night, you will get lost and might miss the sunrise!