If I remember right, all the independent companies I saw on the web have their "money back" guarantee. Also, when the cruiselines cancel cave tubing, take into consideration that their guide/guest ratio is like 20-25 to a guide (difficult for control and safety), whereas the independent guys have a 6-10 guest/guide ratio, know the river system well, and I have seen time and time again, such as Thursday 18 September 2008, that the cruiselines cancelled cave tubing, and yet 6 independent companies carried out the tour - safely and with fun!!!! I say, whatever, go ashore and check out the real story before you accept any cancel signal. One website of an independent actually asks its confirmed guests to go ashore and double check the cave status, accept another tour, or arrange a refend !!!