I am not a expert but I did sleep in a Holiday Inn ONCE....
Once you leave CALIFORNIA..... Nevada, Idaho, Utah, Wyoming, Montana ALL RECOGNIZE YOUR RIGHTS TO SELF DEFENSE WITH A FIREARM.
I am assuming that you don't have a carry permit, If this assumption is incorrect, please forgive me.
Open carry is good to go in Nevada, Idaho, Utah, Wyoming, and Montana
In Utah in your car you are able to carry openly or concealed, loaded or unloaded as you desire provided you are of age to possess a firearm and are legally in possession of the vehicle. Without a permit in Utah outside your car... the weapon must be unloaded (Utah defined Unloaded with semi-auto as "an empty chamber" Full mag inserted into weapon is just fine.... with a revolver, the cylinder under the hammer and the next in rotation must be empty, so with a 5 shot revolver you would be limited to 3 live rounds" Just remember IN the car fully loaded is just fine OUTSIDE the car without permit must meet Utah's definition of Utah unloaded!
In Idaho in the car the firearm must be clearly visible if you don't have a permit.
Go to the Map option at the top of the page and select the one labled OPEN CARRY and then the one lable TRAVEL....
YOUR questions will be answered.