We go to Ottawa often but usually by train so I'm not sure of the transit services in the area outside the city itself.

Why not log onto the Ottawa Tourism site and ask the question.

I'm not sure exactly where carp is or how far from the city either. Greyhound Buses may have a local service or a rental car would be the easiest.

Do a Map search too to pin down the location vis-a-vis a main highway, etc.

Good luck!

Peter Montreal