My family did whale watching at Tofino and it was amazing.
You could always spend the time driving around looking for a marijuana field, pack your spare tire compartment, and drive to Van w/ an easy $50,000 retail in illicit narcotics to sell at U2. Though, your wife may not be up for it... and if you're not into selling it, thats a lot of bud to smoke yourself
U2 sounds like an awsome concert, should be amazing.