Yes, Moto Z2 Play does have VoLTE support, also.
Yes, Moto Z2 Play comes with Corning Gorilla Glass protection.
Moto Z2 Play SAR value are as below:
SAR Value (Head): 1.455 WKg/1g
SAR Value (Body): 1.24 WKg/1g
Yes, it comes with LED flash light with front camera.
Moto Z2 Play comes with Water repellent nano-coating**. Advanced nano-coating technology creates a water repellent barrier to help protect against moderate exposure to water such as accidental spills, splashes or light rain. Not designed to be submersed in water, or exposed to pressurized water, or other liquids.