Came here last night after having an early dinner at the other end of the strip and yet again, despite the fact that my favorite croissant was sold out, I ordered a cheese Danish and the taste was still fantastic even though it had been made earlier in the day.
OAN - I passed by JP's other location in the Bellagio which is much smaller although they do have a nice flowing chocolate fall display. If you have never been to the JP locations, I recommend going to the one in the Aria to get the full "sweets" experience!
In closing, for those of you who live in the San Francisco area, this particular location probably rivals Belinda Leong's patisserie in the Upper Fillmore area of the city.