Agree with what others have written above. Healing very quick, but takes a little time before you can fuck comfortably. Also is more comfortable with a bigger gauge piercing with time (as said above, I found stretching quite easy); the small gauge piercing can have a bit of a cheese wire effect. Peeing issues depend on if you are wearing it all the time, I find. If you don't wear it, just cover up the extra hole with one finger (like playing the recorder 😄).
Think I have written this before, but I had an interesting time getting mine pierced, which was about 15 years ago I think. I was really turned on by the piercer guy's tattoo sleeves and got a hard-on which wouldn't go away even after piercing. This caused it to keep bleeding a bit, so the piercer told me to have a wank to make my cock go soft and stop the bleeding. Just wished he had offered to do it for me!
My other fun experience was one night in SOP. A pierced guy fucked me in the dark then was fingering my hole a lot but didn't say why. The following morning the ping when I had a shit let me know that he had lost his piercing ball inside me and it took several hours to come out naturally. That really turned me on too and I have subsequently told the guy and he was amused too.