We are planning our first trip to Venice and would greatly appreciate any feedback on this company's tours which are pre-booked and paid for in advance. Specifically we were looking at purchasing the Alilaguna Airport - Venice one way ticket for 14 euros each to use when we first arrive at the airport to get to our hotel, and also the Grand Canal tour for 1 hour which costs 25 euro each, and the Murano Burano Torcello Islands Tour for 4 hours which costs 17 euros each. We arrive on May 28, 2013 at 17:30 and plan to have a tour guide take us to major sites on May 29, 2013 and would do the islands tour on May 30, 2013 in am before we depart later that pm. We just have a short time in Venice, so do not want to make a mistake in booking something I should not have. Thank you for your advice and comments!!