I'll keep it clean..I swear it.
You're 23 and he's 49? Wait...then...he needs nothing.
He seems to have it going on already, as it is
Are you both going to be vacationing in LV at same time? That part isn't clear.
If so, that opens up a whole different list of possibilities. so many great places to eat. Also I'll bet there are gift certificates for spa treatments and/or massages both in LV or near him he might enjoy.
A good book could be OK...but a bit dull..unless he really loves a ceertain subject. If he travels alot..or can't sit down for a book reading, a book on CD or Ipod is always good.
Does he cook? I had a g/f give me a easy-to-prepare gourmet cook book and we had a great date by a cooking recipe from that book.
Perhaps, a special bottle of wine could be nice. I could recommend several you could get nationally. Couple that with some dark chocolate (Ghiradelli, Belgian, or Swiss) and you've got an incredible sensual dessert treat.
I got a million more. Just let me know if you are going to be in LV together.