Just to chime in....
In a previous FSO where Ground Vehicles were used, there was only 1 life. The fight ensued in a forest, and while I managed to kill one tank, I quickly was killed and that ended my life very quickly. Never saw any objective, never really got any kind of idea of what was going on.
In this FSO, multiple lives were allowed and kind of cause a very fluid and exciting fight. I only used 1 GV life in the first frame, and 2 in the second. I was still very careful with my lives, because the time it takes to drive back to the objective is substantial enough. In the first frame I drove almost the entire 60 mins before meeting an enemy tank at the base I approached. And when I shot him down, I got a lot of "Boooing" over the vox.
Second frame, the push on St. Vith was incredibly difficult, and made so even more because I knew I had to advance carefully or have a 15 min drive back to the objective.
I think due to the time aspect of the frame for GV's only being 60 mins, you have to be more careful. Defense is one thing, because you're close, but with the aircraft still available to bomb down hangers, you can't waste your lives.
I thoughouly enjoyed the GV portion of this FSO much more. There were objectives to take/defend, and a time frame to do it in. I rarely drive tanks in the main arenas, and the FSO has encouraged me to drive them more often now.
As far as flying differently, because there's a ground portion, I don't see that as the case. Least not for me. I'd have MUCH rather been in the air over our objective scouting, and bombing enemy tanks, than on the ground. It didn't happen that way, but that's how I'd have rather it gone.