I'm planning to spend a full day in Versailles in July with my 3 children, ages 10-13. We'll go super early to tour the chateau and beat the crowds, and I'd like to rent bicycles for the gardens and getting to the smaller sites. Does anyone know if the bike rental near the canal has bikes for kids? We are avid riders but my 10 and 11 year cannot ride adult bikes as they are too big. If they do have them, do I need to worry about availability?