Doubt you’d have to worry about freezing in central Florida. Temps never get that low long enough to do any damage.

You have received lots of advice on doing this.

As others have stated, one of the easiest ways is simply run 1/2" or 3/4" PVC plastic pipe above ground from the spigot to the Lanai and then clamp it to the aluminum frame.

One of the tricks to get from the spigot to the PVC pipe is simply to use a short, flexible metal braided hose like you see for a washing machine.. It has female fittings on both ends, one for the spigot and one for the head end of the PVC pipe. That way it can be easily disconnected and allowed to drain if it really gets below freezing in the winter.

Here are photos of my installation.

Ditto on the screen room drains and Billy bib. Work great for pressure washing. Inexpensive and looks great only thing is you have to connect a hose from your bib on the house to the outside of the Billy bib. I sacrificed an older hose and cut it to the specific length. Just be sure to turn the water OFF at the house connection when not in use.

Me Too !

Call Screen Room Drains. They will install a hose bid on the inside of your screened room. Much less expensive than running pipes.

I'm confused. It looks like your house hose bibb is located very close to the lanai. But, I thought the OP wants to run a permanent water line a much longer distance, maybe 20 feet or so, from the house hose bibb to the lanai. That would be an aboveground potable water line, which I would not want at my house.

There hinge on the drains is a weak point.

My drain covers are breaking off at the hinge after a year. Need to find another way to keep them attached.

I have a hose normally attached inside the birdcage, one of the self coiling type, I can stretch it to get to any area of the bird cage, and it coils up to stay out of the way when not is use.

Lanai Billy-Bib is the answer: 352-342-7696. Does exactly what you're wanting. Very reasonable.

It could freeze? Where do you live?

I reread your post, and a neighbor extended the piping by using a flexible washer hose (like in my photos) to white PVC pipe buried next to the foundation of the house. I their case they did not carry it into the lanai like I did. They did add small brackets to hold the vertical pipes in place.

Hose bib
 

My hose bib was just outside my lanai, but it meant dragging the hose all the way to the back of the house to water. You can add a hose bib in the irrigation line next to the sprinkle valve manifold on the side of your house. Cost is about $35. You can see how it’s done on you tube.

Totally getting this, thanks!

Joe

Adding a hose bibb to the irrigation system is not a good idea. First of all, the water is not clean enough to hose down the lanai because it can cause staining on surfaces. And second, to comply with the plumbing code, the hose bibb needs to be in a locked box and have a sign on it warning people that it is not potable water and is not safe for drinking.