This is a pretty good little kit, it comes with everything you need for setup, mounting the solar, and hanging the feeder, and cleaning it too - just supply your own nectar. It'll take also comes with some spare parts, like red flowers.
It'll take a bit of time to setup since you need to create your account, install the app, go through all the steps to adopt the feeder into your account. It's not hard, but it's more complicated than setting up a Ring camera.
To refill it, you'll take it down, turn it upside-down, remove a plug, and pour into the bottom. There's space on the lid you can pour water for an ant trap, though I wonder if that will cause some rust on the metal hooks.
The solar panel comes with a pretty long cable - wish I measured it before mounting, but probably 5 or 6 feet, so you can mount the solar up in the sun and the feeder where you want to reach it.
The app works, but it strongly encourages you into subscribing to a paid plan. The app is a little overwhelming in my opinion with all the options you don't want creating visual noise around the ones you do. But it works, so I won't dock it points for the app since those reviews belong in the app store.
Overall, it's a pretty cool little system.