Hotel Website: The Cosmopolitan of Las Vegas, Autograph Collection
Official List of Cosmopolitan Bonvoy Elite Benefits: https://www.cosmopolitanlasvegas.com/marriott-bonvoy-at-the-cosmopolitan-of-las-vegas

The Cosmopolitan of Las Vegas, the only charges that qualify for Points are as follows:
- Room rate, room service food and beverage, in-room movies, phone calls and in-room minibar purchases
- Points cannot be earned on any other purchases at hotel outlets or for hotel services

The Cosmopolitan is a "resort," so basically the only elite benny is a possible upgrade. Elites are not exempt from the resort fee

Resort fee is $39+tax effective 01/01/2019. Also as of that date, parking (self & valet) is complimentary for hotel guests.

Cosmopolitan is exempt from providing free wifi to Plats per Marriott's T&Cs, however it is included with the mandatory $39 daily resort fee so there is still no extra charge to any guest for using it.

Platinums receive:

* use of Platinum check-in area (to the left of main desks)

* Platinum arrival gift is $10FB coupon or 1,000 points

* room upgrade (space available) - better luck on mid-week stays than weekend stays. sometimes a 'sandwich' (ie, bribe) to front desk does the trick.

* free tea/coffee 6am - noon in the plat lobby check-in area

* Wicked Spoon: Marriott Rewards Platinums (and PPs) get to use preferred line and get 15% discount when staying at the property. Just show your MR Plat or PP card.
You can book through Virtuoso as well as Amex FHR for complimentary breakfast buffet at Wicked spoon.

Resort fee:

* $39 (+ tax) per day for resort fee, which includes gym access, local + long distance calls, Wifi, pool access. The resort fee is not waived.

Receiving Bonvoy Points for a Stay:

Many have reported needing to follow up to have Marriott Bonvoy points manually posted post stay (they do not typically post automatically.) A tip is to email [email protected] shortly after a stay asking them to manually forward your folio to Marriott Bonvoy for processing.

Hat tip to billycwhatup for this:

* Identity points and MR points can not be earned on the same stay

Other tips

The Terrace Suites are the most common room type and are classified as studio and one bedroom, with options for King, 2 Queens with or without a fountain view. They are essentially the same size, however (10 sq ft difference), but the layouts differ.

The King Studio Suite has a standard bathroom with shower and tub, a living room area with large sitting area and an L shaped sofa and the bed is in a separate area, though not separated.

The King One BR Suite has the same kind of living room area, with the bedroom separated by sliding doors and the bathroom is larger, with a "soaking tub".

If you get a terrace suite of any kind with 2 Queens, the living area will be smaller.

And unless your room type is described as "fountain view", you aren't guaranteed it, though Platinum status will get you upgraded on check in if they have one available.

If you book any of these room types and want to aim higher, I would try a giving the receptionist a 50$ "sandwich", and ask if any wraparounds upgrades would be available. If they say yes, there is a good chance that it will be a wraparound facing south-east or south-west, which for me would be a no go. Taste in view is personal of course, but for me the fountain-Eiffel tower view are so much nicer than the south facing views. Also when you would have the choice between a low level wraparound or high level terrace suite, I would still take the high level terrace suite, because a number of floors on the east tower are blocked by the big Bellagio sign. (see youtube vids).

If you really want a high level wraparound then you probably would have to pay, which can sometimes be not that much. If I'm not mistaken I think they offered me a wraparound at 150$ per night more, but we originally booked a 1 bedroom terrace room without view.

Last tip : If you would get the choice of wraparound I would definitely take a high floor east tower one, facing north-east. That would give you bellagio fountain + eiffel tower view, but also a good portion of the south strip.