Hi Mako, As you've discovered, "Rejoin as player" and "Launch asd Player" still retains your ability to see things that normally only the GM can see. For simply checking line-of-sight, if a token that has vision I select it and use CTRL+L to see what that token can see. Too really see what your players will be seeing, I suggest creating a free dummy account as Andrew R. suggested. ands invite that account to your game. I often log in and open the game with my Pro account in Chrome (my preferred browser) then log in and enter the game with my free account using Firefox, keeping both browsers open so I can see what's happening in real time as I set up maps and encounters. (You can do the same using the different profiles in the same browser, although I've found it simpler just using different browsers.) The link below gives detailed instructions on how to set up and use dummy accounts. Creating a Dummy Account (and why)