A:AnswerYes, as long as the stand supports the weight of the TV, which is 21.19 pounds and has a mount pattern of 200x200mm. You'll need an M6x10mm screw.
A:AnswerYou would need to call your local Best Buy store to see when this item will be back in stock. The main warehouse in New Jersey has plenty on hand so you may be able to have it delivered it the stores in your area do not want to keep them in stock.
A:AnswerMost streaming apps will require a paid subscription, but the Vizio Smartcast platform offers an array of free content through the Watch Free channel.
A:AnswerThere is not an Alexa or Google built into the TV, but the TV does have a built in Chromecast and it is compatible with Alexa and Google Assistant devices as well as Apple Home Kit too.