How to load different scenes into the interactive play script?

[Eugleo]

I'm using the latest habitat-lab and habitat-sim and I've managed to get the one interactive example from README to work:

python examples/interactive_play.py --never-end

What would be the best way to change the scene the robot is in? E.g. if I wanted to walk around the mp3d_example_scene, which I've downloaded according to this dataset doc.

Also, is there a possibility to switch to a first-person POV, similarly to what you have in the demostration?