I just received this in a final confirmation email from Advisor. Unfortunately, I'll be arriving after 5:00pm.

Ground Transportation
JW Marriott Las Vegas Resort shuttle service from the airport to
the hotel is available Tuesday, September 28 and Wednesday,
September 29, between 8:00am and 5:00pm, at $30.00 per person.
At least 24 hours in advance you must contact the JW Marriott at
golf@jwmarriottlv.com to request details, make your reservation,
arrange payment, and receive your shuttle confirmation.

For shuttle service from the hotel to the airport, contact the
concierge desk at the JW Marriott Las Vegas Resort.

Taxis are also available at the airport and the hotel.