IME with booking with UR I was able to cancel within 24 hrs for travel less than 7 days out. Being that the rule is due to a law I would assume its universal
The law only applies if travel is more than 7 days out, and doesn't apply to travel agencies. However, many travel agencies, such as UR, Expedia, Orbitz, Priceline, Amex Travel, ect, have their own 24 hour cancellation policies. This has nothing directly to do with the law.