Recently, the birds have been parking on my balcony

It depends on whether the sealing of your balcony is done well, and the sun protection mentioned upstairs is not difficult, and the problem is not big, the main thing is not to have rain.

If you don't have a lot of storage space, consider installing a cabinet on the balcony. Because many decoration companies now consider the functional division of the balcony when designing. Installing cabinets on the balcony not only increases the storage function, but also makes the balcony more beautiful if you add a little styling.

Not good. Alcohol is generally protected from direct sunlight and high temperatures, and balconies are open areas that are not suitable for storing alcohol.

There are no benefits, but there will be a little bit of disadvantages!

This should be considered from the perspective of security and privacy, and there are other people walking around under the balcony, and it is also troublesome if the water leaks, so I don't think it is very suitable.