Thanks Mark. Are all of these weatherproof?
Yes the Ubiquiti outdoor models are all...."outdoor models"..thus, "weatherproof". In the above link Mark put up..."The UniFi AC Mesh Pro is designed to withstand the elements, making it ideal for outdoor deployment." The PDF data sheet in the link gives further specs, including the wide temp range it's able to withstand.
However, you're going to want an ethernet run. Using a residential router at the top..and trying to mix another "wireless repeater" will yield less than desirable results.
Highly recommend treating this as a business network with proper business grade hardware. You can do this without breaking the budget, plenty of VERY affordable brands such as Ubiquiti or MickoTik.
Vineyards can have a decent crowd at some events....we have some vineyard clients. You want a design a network with a max of ~40 clients per AP. Yes many "specs" on access points will say something like 127 clients max. But in the real world, "best practice" teaches us to target a max of 40x clients per AP. So ask them "how many people can show up at your events?"
Also, remember..it's not about the range of the access points, it's about the range of the clients devices. While some access points can have a range of 400 or 500 or 600 feet...if a wireless client is a smart phone with a range of say...100 feet...maybe 150 feet max, some even less than 100 feet...it's like playing a game of football pass with a professional quarterback. Do you want to stand far away at HIS max throwing distance? Or yours? If you want that game of pass the football to last more than 1x throw....
So look at the area the owners wish to blanket with WiFi....and factor in density of people, and spacial distances for the range of the APs. As well as physical barriers...like many vineyards have a big old rustic barn or some outdoor pavilion structure with a roof over it.
With a Ubiquiti USG (router), 16 port POE switch (or maybe even just the 8 port model..depending on how large their office is, a Cloud Key...an indoor Unifi AP AC or two, and a MESH Pro outdoor model, and an outdoor MESH Standard model or two...you can build a darned great performing network for not a heck of a lot of budget. Have a captive portal setup to have the clients "Like" their FB page and other social media when they hop on..and it gets them excited.
Would you rather see the client spend 500 bucks for a duct-tape and paperclip mix match of residential gear on the cheap that doesn't work well and they heard complaints at every function? Or spend 2 grand on a top notch system with room to grow, and that works very well at each function and helps grow their social media too!. It's a winery..they have the money, they're upper crust people and that's the type of clientele they cater too. Just look at the cars in the driveway.