Can anyone help me find the costs of optional excursuions on VIking Nile RIver cruises? I can't make a fair comparison between competitors without that information. For example, there is a Hot AIr Balloon excursion over the Valley of the Kings. It sounds wonderful but at what cost? fF it's just one excursion to pay for it's not a big deal, if it's 5 or 6 it becomes a different story.