We're flying to Venice to board Rotterdam on September 14, 2005. Flying into Marco Polo Airport at 8:30am. We'd like to get a Water Taxi or transportation (cheap) to travel down the Grand Canal to St. Mark's Square. Any suggestions from anyone who's been there, done that? No Gondola, we've done that before and it's expensive.. .. .. ..want to save money to spend on ship and Greek Islands. Thanks in advance!

Carole