I am so used to good service, but was very disappo...

I am so used to good service, but was very disappointed tonight. Took our visiting guests to explore the wonder that is McMenamins. Started out wonderful in the wine bar, couple of glasses of enjoyable wine and a wine flight. (Got our Passport Stamps), then on to the Loading Dock for food under the umbrellas.
I wish Brandon had been our server as he was a great communicator and attentive, who started to serve us, unlike Johanna who no one could find for over 30 minutes and then proceeded to argue with guest about how long she had disappeared. When asked about Dessert, stated it was on the menu, it was not, then went to look for a Dessert menu to find out the only dessert being offered in the loading dock all night was Strawberry Shortcake.
I of course will return as I have for more than 20 years and chalk this up to a random challenge of service.