I'm not particularly concerned about balancing my research students with my class requirements. This is not a new prep for me, and the summer class size (20) is considerably smaller than during the regular semesters. The lecture time is a little over two hours a day. I've lectured for back-to-back classes during the regular semester, so I'm not worried about getting off-track, tired, or bored.
Some of my colleagues complained nearly nonstop through the first summer term. I wonder, is summer teaching REALLY that bad? Should I heed the warnings of my coworkers and brace myself for an overwhelming second half of the summer?