When offering optional products or services (e.g. upgrades, insurance) in conjunction with an airfare or package containing air transportation, consumers will have to opt-in to purchase the ancillary service. 14 CFR 399.84(c). In the past, agents and carriers have automatically added optional services like travel insurance, allowing consumers to opt-out if they did not want it. With the new law, the DOT will require purchases of all optional services to be knowing and voluntary by opting-in.