I think it's about an hour, maybe 1.5. I'm not absolutely sure though. My husband and I did high tea at the tea room in GF. We really enjoyed it; the food and tea were good. It's currently being refurbished, so you should check when that will be finished. If you have already eaten lunch, you could also got to one of the other restaurants or a bar for something light, like a drink, appetizer, or dessert. You could swim at one of the pools, workout, go to the spa, or read a book.