My SIL's baby's name tag said "baby of [her name]" even though they had the name picked out months before she was born so you might find, even if you do decide on a name in advance you don't get it on the name tag.
We have (finally!) decided on a name, but I'm refusing to properly accept it until we see him, just to make sure it suits him. You never know, OH might take one look at him and decide he looks like a Ben, if not, then apparently the best time to ask OHs for anything is when you've just given birth to their baby!