I'm looking at booking a limo for transport next month. Presidential has a nice offer on their website for $133. I assume gratuity is not included. I can get a limo from the Cosmopolitan itself for $103 each way all inclusive. I figure that with tip, the cost is pretty close with the Cosmo option being slightly higher. I see great reviews about presidential so I have no qualms about booking with them. I'm curious as to what additional hidden costs might be in there? Any recommendation? I'm gold level identity and don't have a host else I would've set up through them. Also, does the cosmopolitan still honor the Marriott Gold benefit of limo upgrade from sedan?