For Americans i guess Dubai would be considered exotic,for that matter most places outside of Europe and Japan.....UAL747 i am assuming you are American, i would think Dubai would qualify as an exotic for you....(hey im not being sarcastic im simply trying to be logical and hopefully helpful). I would suggest Dubai definately. Other then being an exotic place in the middle east that you can tell your friends about, it has one of the best hotels in the world (even the non famous hotels in Dubai are great), it has fine dining of all kinds from steak houses to shawarma stalls,great shopping of all kinds,lovely beaches and out door activities like desert safari and things like that,good nightlife by western standards but what is different from USA most clubs that you would end up in there would be an abundance of GOEGEOUS(i really mean it!) women from former soviet countries(uzbek,tajik n so forth) and eastern european countries that will go with you for about $120-$150 give or take.....i dont know if you would be interested in that but im just informing you of all the attractions in Dubai and for alot of people that is a big one
..... Its a very safe place and as an Americans you should have no concerns what so ever...your liscense is good there and you can rent anything from a Toyota Corolla to a Ferrari 360...Dubai ranks probably in the top 5-10 cities of the world for having the hottest cars
Last but not least,another thing that would certainly factor in is the price, and even though i know some people here would disagree with me, Dubai is a very very reasonably priced place(cheap in some things) not only by US standards but certainly for what it has to offer....you can get a room in DXB
for $200 that you cant dream of getting in a major US city for $600...cabs r also very reasonable and are everywhere...Other then some of the attractions that i have pointed out, there are tons more that may interest you....
So if i were you i would certainly think hard about Dubai and specially since you wanna go in December, which as Marco pointed out, has the best weather of the year.......Good luck and keep us posted on what you decide.