I wish I'd known this before my circ - literally the most painful thing at the moment is pubes sticking to my newly exposed glans. The pre-op checklist said not to shave because of risk of infection but pubes don't grow that quickly so I would strongly recommend you get in there and trim with a pair of scissors, particularly the area above the penis if you sleep on your back. Don't shave, just prune them good and short...
Any other prep tips?