Remember what earlier runs of this search returned and output only new items or items whose price/status changed. Use with a Schedule; unchanged items are not charged. With this on, Max tours is the number of tours checked each run (the watched window), so a run never digs deeper than the first one. Compared: from-price, struck-through price, rating and free cancellation. With reviews on, only reviews not seen before are saved, also for tours that did not change. Prices are converted into the chosen currency, so pick the destination's own currency (EUR for Paris, GBP for London): converted prices move with exchange rates every day. With Currency empty, monitoring asks for USD. Viator orders tours by the visitor's country, so monitoring pins the proxy to the US unless you set a proxy country.