It isn't really a matter of easy versus hard. Rather, it is a matter of what the reaction by the customer should be if they encounter something about the service that they don't like: If this aspect of the service violates the terms and conditions, then the customer is fully justified being upset at the service provider. If this aspect of the service is in accordance with the terms and conditions, and therefore the customer was disappointed because they didn't read the terms and conditions before making a purchase, then they should be upset with themselves.It is always easy to sit back and suggest that guests ask for terms and conditions of a package and also to insist on hard copy information prior to purchasing
So there is no question that the upset is appropriate; it is just a matter of directing it appropriately, and that means taking responsibility for one's own actions.