@Georgia_PeachesLove the kitty pics!!
I just returned from Alaska, so it will be nice to "revisit" with you.
Since your time in Victoria is short, take a walk off the ship towards Fisherman's Wharf (it's well marked). From there you can decide if you want to go on to the Harbour and at least see the Empress and it's grounds. It's all an easy walk.
Alaska is beautiful, so half the experience is being out when you're sailing. Hopefully, the wildlife will be active and your days more sunny than not! (Pack sun screen! Many on my last cruise got sunburns when the sun came out.)