procedure turn

We are flying an IFR flight plan. We requested an RNAV approach via an IAF. ATC cleared us to the point VIA "Direct fix, Direct airport". Would this type of clearance imply that we do not have to the PT at the specified fix?... Are we cleared straight in? Would flying at night change any factors?

I'm learning for IR and just understood that procudure turns are required unless NoPT is specified or straight-in approach is cleared. But still I have some questions. Here are examples, 1. WASHINGTON MUNI airport (AWG) https://aeronav.faa.gov/d-tpp/2109/06289V36.PDF When arriving on R-186...