Hi Marie here at Tourism Whistler
Tofino and Whistler are two completely different (great!) experiences.
If you can, maybe you want to base this decision on the weather and book last minute.
If the weather is sunny and warm, Tofino would be a lot of fun for the kids. The ocean is cold, but they would probably be content spending the day digging in the sand and exploring the amazing beaches. Tofino is absolutely stunning and one of my favorite places to visit.
There are lots of fun things to do in Whistler with small children - here are some ideas (all of these can be done if the weather is not warm and sunny!)
- Ride the Peak 2 Peak gondola. Children love this experience and they might get to spot a bear or other wildlife from the safety of the gondola. Strollers etc. can come too. Have lunch at the top of Whistler or Blackcomb Mountain
- Rent a bike and explore the Valley Trail. You can rent trailers or trail-a-bikes for the kids. There are a number of lakes, beaches and parks to stop at to let the kids run around.
- Head to the Blackcomb Base Adventure zone - pony rides, bouncy castle, mini-golf and more
- Explore the Village. There is an amazing playground near the Marketplace and stop at Cows for an ice cream is a must
- Squamish Lil'Wat Cultural Centre -there is a great craft area for kids and they will certainly get the Canadian experience with a visit here.
Many of the hotels and condos in Whistler have a pool, so this is an extra bonus when travelling with the kids
Hope that helps