Carlos, Swamp Fever is as bad as people make it out to be. That one map in middle spoils the bunch. Water, water, water, open spaces, open spaces, open spaces. Yeah, great map. I can't think of any singular good part about the airplane map at all.
Map 1 and the finale are the only maps worth playing in the campaign. All reasons for finding this campaign a drag have been touched on. Actually, the Shantytown map is also pretty good. So, there are 3 good maps out of 4? Map 2 is the campaign killer, imo.
Cold Stream is great but under played. I only agree to vote map because it clears the server? Why? Probably because players can't hack it. It's just as viable as any other campaign besides Swamp Fever. Don't run. You'll have fun if you actually stick around to play it.
Crash Course is pretty fun, too. Too bad it clears the server. Again, I only vote map because it clears the server.
And lastly, you don't have to play with bots. Why would you want to play with bots? Go play some other game or start your own listen server if you want to try out btw techniques.