Why limit this to live-event and lodging industries? Why not all the fees tacked on by cell carriers?
For example, AT&T charges a fee to "recover certain aggregate expenses AT&T incurs, including, but not limited to, charges AT&T or its agents pay to interconnect with other carriers to deliver calls from AT&T customers to their customers and charges associated with cell site rents and maintenance" [1]
For example, AT&T charges a fee to "recover certain aggregate expenses AT&T incurs, including, but not limited to, charges AT&T or its agents pay to interconnect with other carriers to deliver calls from AT&T customers to their customers and charges associated with cell site rents and maintenance" [1]
[1] https://www.att.com/legal/terms.otherWirelessFeeSchedule.htm...