If you take one of the commercial shuttle services (NOT a hotel shuttle--didn't think any did the airport, but anyway) then you have the option of Downtown or Strip--Downtown is a couple bucks more than Strip. Within the Strip, they usually have 2 or 3 categories--north & south strip. You just tell them where you're staying and they tell you which bus to get on

I've not taken the downtown shuttle, so I don't know how long it takes or where they drop you, but they certainly wouldn't stop at the Strip hotels. Not sure what they do about off-Strip like Orleans?