Got a Freestyle Libre today. Any feedback or tips?

I asked my doctor for a scrip since now that I am under good control (mid 5s!), I want to get back into cycling, going to the gym and hiking/camping. Those activities don't always offer convenient or sanitary conditions for finger pricks and, right now, I'm more concerned with hypos than highs.

How good is the adhesive? Any reactions? I'm kinda sweaty and have oily skin. I know it is waterproof, but that's from the outside. How long did it take to stop "feeling" the sensor pod? Does it hurt if you bump or rub it? I'm a side sleeper, so I'm afraid I might feel it when I roll over and wake up. Will it stay attached while lifting weights?