Moto Z2 Play is quite light weight. It wighs just around 145 grams.
Yes, you can use both the Sim cards as well SD card at the same time.
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.
No. Moto Z2 Play comes with nonremovable battery.
Yes, You will get Moto Style mod free in the box.