Other tips in this category
Ask for a student discount
Book direct with tour operators and ask for discounts for direct or quiet days
Free sailing on Wednesdays, Fridays for free with twilights
Free walking tours
Gardens and Museums
Hitch a ride on a boat
Look up online discounts and vouchers
Research before arriving somewhere new
Set up a blog, instagram and facebook following to get free tours
Travel to major destinations in off season
Use city bikes to discover places
Volunteer for tour operators