I'll be in Amsterdam in August and was thinking of doing a 1-hour canal tour. I'm wondering if anyone has experience with the Friendship Amsterdam canal tour company? If so, do you need to get tickets ahead of time, or can you get them there? From what I understand online, the first tour goes out at 11:30...is this indeed true? (I'm looking to do a smaller, open boat, simple kind of cruise.) Thanks so much!