Well, immediately after surgery, it feel very different, and also falsely the same! Obviously there is post operative discomfort and swelling, but also little zings of pain which can make you flinch, as severed nerves re connect. And this seems to happen at awkward times. Then there is the feelings of pain, discomfort, or itching of parts which are no longer there!
Learning to pee again is different, and for some messy! And most of us can't hold on for as long as we used to. Obviously dilating is very different, but I don't, so I'll let others comment. Once everything is healed and settled, there can still be some surprises. Most have some residual erectile tissue in the Mons Pubis, and when this exercises, you wonder what is going on. Remnant inguinal tubes can sometimes be felt when sitting down.
I am 5 years post op, and normally am not conscious of my groin during everyday activities, though bike riding feels different. My clit is sensitive, and not always pleasurably when something is rubbing on it (bike saddle, clothing, etc).
So, yes, it is different, but very soon becomes normal!
Hugs,
Allie