Is it where I was supposed to land, or am I diverting into said airport?
Regardless, if it’s an airport near the Rocky Mountains, than for me it’s an outstation. Since it’s not a hub for us, our gates will be open. If it’s a divert, I will coordinate with dispatch to go to one of our hubs or out stations where the company can handle us. You don’t just pick any old airport and land, then call the company and say, “SURPRISE! We landed at an airport that you had no idea we were going to, and no way to service the airplane. Figure it out!”
It’s not rocket surgery people. Follow your company guidance for diverting and extended ground ops. Two in, two out. If your company doesn’t have a plan codified or even available, then you get buffoonery.