The only thing that is good about this park with a pond is the free shuttle service that runs from the village. I also found that this was a rather busy swimming pond.
The car park has been made in to a drop-off area only. So if you do have a car it is inconvenient. Unfortunately, the Municipality of the Resort of Whistler has recently decided to decrease tourism by charging for parking in most of their day lots. Currently the closest lots to The Village (Lots 1, 2, and 3) are $12 per day. The other lots farther away from The Village are still free, but from the looks of it there are plans to charge at all lots at a future date. So to get to the Lost Park with no fuss or fees, you have to park in lots 4-7 (or on Blackcomb Blvd which has a 2 hrs limit) and hike to the bus stop to grab the free shuttle.
One place I can suggest, if you find transportation (there is no bus service) is Rainbow Park on Alta Lake. There is a very nice view of the mountains across the lake and it is well worth the trek to get there.
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