How to set everyone in a certain area, except myself, in adventure mode?
Solution 1:
Here is a command that might work.
/gamemode adventure @a[x=1,y=2,z=3,dx=4,dy=5,dz=6,name=!JP2K]
Replace 1,2,3 with the x,y,z of the search center. Basically where you want to start with the search radius which is 4,5,6. Replace 4 with how far out on the X axis you want to go. Replace 5 with how far out on the Y axis you want to go. Replace 6 with how far out on the X axis you want to go. Hope this helps! :)