A clean-water leak that sits for two days can degrade to Category 2, and that changes the scope. That is the practical reason speed on day one matters.
Class matters just as much for the schedule. A small Class 1 loss might be dry in two days, but Class 4 losses in dense hardwood, plaster or masonry need specialty drying and extra days. The restorer should explain both ratings in plain language and write them into the file.
Keeping Three Parties Aligned
A good project lead updates the adjuster, chases phase approvals and gives you a realistic move-back date. Ask at the first visit who that person is and how often you will hear from them. If the answer is vague, that is worth noting.