Christmas Eve Mass

We visited the Mission San Xavier del Bac to attend mass on Christmas Eve.  We arrived a half hour early and were lucky enough to score a pew in the back!  We then remembered that we're not Catholic so decided to just walk the grounds and enjoy the beautiful art and architecture instead.  (Not sure what Sylvia is checking on.)

Is skipping disrespectful?

Next to the Mission is a hill with a path to walk around.