When you arrive your boat will be full of fuel, gas and water. Unless you are cruising for three weeks or more it will not be necessary to top up with fuel, or to replace the gas bottles. Both of these items are included together with the lock fees in your navigation forfait. Water however, will be required, the boats usually have autonomy of 2-3 days, but it is wise to top up the tank when the opportunity presents itself, or at least every other day. Water is usually available in towns and villages and in ports along the canal. It is often free in towns and villages, but you should expect to pay a few Euros to fill up in the ports.
Quality boating holidays from the French canal specialist