My family wants to go to Niagara Falls, ON next week for about 5-6 days. I know the price goes up when the stay includes a Saturday night; does it also go up when the stay include a Friday night or Sunday night? I'm just trying to decide if it's cheaper to bid, on Priceline, a stay with Sunday check-in and Friday check-out (include Sunday night) or one with Monday check-in and Saturday check-out (include Friday night). Any advice is appreciated. Thanks.