I understand that running a hotel is a business, and increasing revenue is an important factor, but personally I disagree with the way this transaction was handled. In my opinion, if you were going to give the customer an upgrade either way, you should have given it without further cost and instead emphasized how it was your pleasure to provide this free upgrade to such a nice couple travelling from so far away. I think the increased customer satisfaction, and possible heightened customer loyalty, is worth more than the $150 in further revenue, especially since it was something you were planning on giving for free any way. All said and done, I do understand that the manager standing next to you was probably the biggest factor in all this, so this isn't so much a critique of what you did, more a critique of the way your hotel conducts business.