1. The planet is about the size of Mars, so yes, circling it would take quite a long time. It definitely can't be explored in a few days! It would probably take more on the order of 2 years.

2. There are the monsters that came with the city, as well as some small insects and invertebrates (that the fish eat). Beyond that, the world seems to be currently devoid of life.

3. Yup, the blessings are the same!

4. Yes, one moment there would be a cave ceiling above and the next there would be sky. Fear's teleport happens instantly!