I've played it a bit in the past, not with mods, but just some of the standard campaigns of the base game and DLC. Fun game, I liked it but haven't played in a good while.
Yeah it's fun, never got the "full experience" though since I never play multiplayer, I think I have like 600 hours just messing around with the editor and playing those maps with make your own style type of stuff, really flexible game overall, just might be hard to get into it the first time
Solo Arma 3 large scale missions are some of the most immersive and intense moments I've ever had playing a video game. Antistasi and Vindicta alone are worth getting it.