I would recommend getting something set up in advance, whether that is Lansky or another car service. On our last trip we did the limo service with Primetime on arrival and then planned on just catching an Uber XL on the way back for departure. That was a mistake. The Uber that showed up was a BMW X5 with the 5-seat configuration (including the driver), which was not going to fit us 5 adults and our luggage (several checked suitcases). It was incredibly stressful trying to get something set up while we were trying to get to the airport and we ended up just going with a taxi.
Also - have you considered doing a grocery delivery to your hotel? We've done those a few times and it makes things so much easier rather than having to stop. If you're staying on-site, bellhop services will hold it for you. If you're staying off-site, some hotels will hold deliveries while others will not. When we've stayed at the Desert Inn, we've actually done a DoorDash order from a gas station and the driver brought a case of water and soda for in the room. Took maybe 20-30 minutes wait. Might be something to check into!
