Really, the challenge is not doing the experiments. That is just a lot of repetition. However, the challenge is to see the genius behind the experiments, to see what information and logic the experiment is trying to extract from the process. Really, it is not so much about what you do in the lab, as much as it is about where the experiment will take you. In case you have gotten completely lost, allow me to sum up.
Microbiology is a challenge in creating clever experiments.
It rewards cleverness and punishes stupidity. Most often if you work with someone who is fantastic at it, you will be too. OK, on to bigger and better things. DO NOT go into microbiology. Pick biochem or chemistry, or general biology, or basket weaving.