I found it hard to pee after the catheter was removed. Squirting warm water from a peri bottle helped to get it flowing.
You don't want to be straining to poop, so consider stool softeners for the first few days.
Jolly ranchers if you have general, and a pillow to hold on your tummy for the coughing.
After my first I was told to keep the incision dry, after my second I was toss to wash it. Both times, I found it helpful to lay a CPF for along the cut to keep the loose belly flap from rubbing and to keep it all dry. I'm also a HUGE fan of those netted panties the hospital gives you. Excellent airflow. Ask the nurse to hook you up with extras before you go home.