I would like to let a friend try out my DJI Goggles with his Mavic Pro over the weekend so he can try them before he buys a new set for himself.
I searched online and there are a decent number of forum posts in the wild about Goggles not being able to be unlinked from account/drone, and potentially connections issues. I'm not sure what is real so I thought I would ask you fine people.

Is it possible, and any advice on the best way to go about this?

Hi, thanks for the inquiry. There should be no problem connecting your DJI Goggles to your friend's Mavic Pro. The account will be saved in the mobile device that you've used including the data. We would recommend updating the firmware of the DJI Goggles and Mavic Pro to prevent the linking problem. Please see the video tutorial below. Thank you for your support.