In Jan/2017I booked (a) Air Canada flight from Winnipeg to La Vegas and then (b) X hotel nights at the Stratosphere. The booking confirmation from the Stratosphere said I had window of x days in which to change/cancel the booking. When I tried to cancel the hotel through Expedia (couldn't be done on-line) my two separate bookings had morphed into a non-cancellable (without penalty, which equalled the hotel cost) "package holiday". I would have had to cancel both parts and then re-book, after paying the $200+ airline rebooking penalty.