A couple friends of mine were hiking in the Hautes Gorges and they told me they run a well organised free bus system up there. This sounds just like my last trip to Europe! You should get to the base of the climbs in no time!
They allow the climbs to cran des erables in hautes georges, but you can't hike to the cliff because of protection land! The authority think that you can kill a forty feet tall tree by walking on it. Note that trad safety is so low in quebec that a safety rescue will damage the forest more than necessarly.
I have done many routes there and many are at the level of moby grape and falling aspiration. the climb just right of where is la pomme d'or in winter is amazing, but close. In that route it is possible to sleep in the cliff in a ledge as big as HE in the gunks. We were probably the second party or third to climb it, so an anchor like the one Dman say that it is good is way to dangerous to even think to climb at this place.
In the park, I saw a cliff far in the west that look like to be two pitches high, but 600 foot wide. Nobody had ever climb there in my knowledge.
Actually, at the bottom of the cliff, most new climber don't even know that we can climb trad in the park, they follow rules. One of this new generation teach me how to belay correctly. Dman will be a king in Quebec.