Model? Normally small car take around 2 hours
Sedan car might up to 3 hours
MPV is around 4 hours

I'm talking about 2 technician in a team

Typically 7 days.. as what they told me after these people tinted on my car

2 weeks is much more better, safety film required more curing period 2-3 months.
Anyways do not worry, as the bubble defect will be cover under warranty claim

Hi, just for your info, there is 2 types of bubbles on the window film.

a) Dirt Bubbles - Normally will not disappear, can claim workmanship warranty and need retint.

b) Air Bubbles - Normally will disappear within 3-4 days for SOLAR film.
                    - Normally will not disappear for SAFETY film, unless u can wait for few months.

Last advice, if you not sure what kind of bubble is it, and the bubble still there after 1 week, it is advice to drive back the car to the tinting shop and ask for warranty claim. Normally, they will fix back for you.