Re: love the full name, hate the nickname
The only one that immediately comes to mind is Candace. I really hate the nn Candy, and it really does seem almost inevitable.
However, I would point out that at least in the US, Amy is strictly a full name and not a nn. In fact, it would be considered pretty odd if an Amelia or an Amity went by Amy.
I'd also say that Lance as a nn for Lawrence is a stretch. Lances are just Lance.
"It's one thing to be open-minded and quite another to be so open-minded your brains fall out."--Dear Abby
"Let other people push you around, and you deserve whatever bad things happen after that."--Lauren Bacall