In regards to maintenance, have your brakes checked and replaced if need be, before you leave. They do not "turn rotors" here, so it's very expensive to have brakes replaced, as they replace the rotors rather than lathe them, as they would in the States. I also recommend bringing a set of rotors and brake pads with you, in addition to all other maintenance items for your van: wiper blade inserts, fuel and gas filters etc. You can access this info in your owner's manual, or check with your mechanic for a shopping list. Otherwise you end up ordering them online or thru the NEX autoport, which is more expensive.
The tire suggestion was a good one. Make sure yours are in good condition before you leave. We found a good online tire source with free shipping, so ordering them is not a big hassle, but you will have to wait for them to arrive. Since Hondas do not have a full-size spare, you may want to bring along at least one new tire, just in case you need it in a pinch.
Hope that helps; enjoy your stay here and have fun travelling in your van!