Update (April 2018)
I came back to visit on a weekday and noticed a huge difference in speed and quality of service. For starters, only half of the restaurant was opened so the wait staff and chefs can service diner in a timely manner. More items were available than from my previous visit and I appreciated that orders were small so even a table of 2 can try a variety of dishes. It really seems like KaKa is learning from their soft opening and I am looking forward to returning once they've hammered everything out.
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I decided to check out this new location before their official opening, expecting some delay in service and unavailable items.
We put our name on a waitlist and was told to come back in 1.5 hours, not bad for a Friday night. Once seated, we placed our order and that's when things went downhill. Within the first hour of our seating, we only received 2 orders (8 piece pieces of sushi in total). The pieces came out cold but the flavour was good and we were . Looking around, it was obvious that everyone was experiencing similar slow service. It turns out the kitchen lost our order - no problem we'll order again. Our meal lasted close to 3 hours.
Quality of the dishes was nothing close to the Markham location - significantly smaller selection, poorly cut sashimi pieces and the table beside us found a bone in their salmon sashimi. With the exception of offering aburi sushi, Kaka is an average AYCE restaurant at best. Not sure if it's worth the $10 premium.
Don't come here expecting the same quality as the Markham location.