That was my conclusion, too, and I searched long and hard for any "No Guns" silliness. We were celebrating my brother's marriage to a delightful lady, and being hauled off in cuffs simply wouldn't do!
If I got the story right, that hotel was built as a destination resort by the Sante Fe Railroad when they ran a line passed the canyon. I believe it opened in 1905, and the swells from Los Angeles could go on holiday in style.
"...A humble and contrite heart, O God, thou wilt not despise." Ps. li
"When law and morality contradict each other, the citizen has the cruel alternative of either losing his moral sense or losing his respect for the law." —Frederic Bastiat