Are booster seats a good idea in a dinette?
Generally, auto seats (and window sills) are higher than in RV's.
If they're sitting up higher in a booster seat, is there still a seat back behind their shoulders? I would worry about the increased chance of whiplash or spine injuries.
If the children can see out the window and the seat back supports their back, I'd argue that the booster seat may not be necessary and without could actually be safer than with.
Another good idea would be to check with your local law enforcement office and many fire departments are trained to teach people safe booster seat installation. :)
Do they sell duct tape in Canada?
:p
Duh, have you never watched Red Green?!