Here it comes, kiddies.
R: You cannot take the final exam early or late. It's been announced since January. It's a normal day, a normal time. You haven't offered any reasonable reason why you can't attend the event. So, no, you have to be like all the rest of the people. You are not special.
G: No, I'm not going to find you a local pharmacist to whom you can pose your lab report questions. Am I in your lab group? Do you imagine that all of the other 79 people in class are having me do their legwork for them? You are not special.
C: No, I will not stay later on Thursday to "go over" what you missed last week while your team was in Texas. I know for a fact that we spend a shitload of money on those tutors who travel with you and who have access to all the class info that I post in the lab databases. Your schedule is rough. I get it. I did the triple jump in college, and sometimes I missed assignments and quizzes. That was my choice. I lived with it. I dealt with it. In order to help all of my students I'm in my office every Tuesday and Thursday from 11-4. You are not special, and I'm not going to treat you like you are.