No depending on what type you get, I use a One Touch Ping pump which is waterproof and if I am not wrong it is the only one that is, it should be good for 3 days but I usually last 4 days, but you will have to learn not to catch it on anything
if you are in Ontario your doctor will have to fill out paperwork for you to get funding yearly, don't worry about
getting too much or to little that is what you nurse is for, she will set it up for you I know with my Pump I can download all my info Carb intake, Insulin, blood test results etc. all can be downloaded to your computer, you will still have to test your blood a lot during the day