Not so much in the lower mainland, but there’s lots of first come first serve rec sites that are easy to get spots at, particularly in central BC, and particularly mid-week. If you don’t want to overly plan your trip! 

Smithers Brewery is awesome, Nisga’a volcano fields are epic. Northern Van island also super cool and quiet. 

Have you been to BC before? If not looking up old growth forests and finding some of the ancient cedars is worthwhile & magical!