Any suggestions (apart from Water World which we'll have done the previous day)? DC are 11 and 9. The tripadvisor reviews of The Potteries Museum and World of Wedgewood make it sound as if they are better for younger kids - mine are so over dressing up and following treasure trails, sadly. They're not averse to museums though, so one of those might be a possibility. I like the idea of doing something distinctively of the region. They love Staffs oatcakes - the Oatcake Boat looks fantastic but I can't see how you work out where they'll be on a particular day.
Or any other suggestions?