If the balcony is low, you can press the sliding door on the outside of the wall

Yes, but it's a bit uncomfortable to use a quilt to block the sun, so it is recommended that you change to a thicker sunshade curtain.

It can be opened, just enough to ventilate, but it is best to close the curtains after opening, because the sun is too big in summer, and the heat outside is also big, and the curtains are both ventilated and sunscreened, but it is recommended to close them at noon when it is the hottest.

Of course you can, although the tiles will look better. Wrap two tubes in it too! >>>More

If it is a frame structure building, it is not a load-bearing wall, it can be smashed, if it is a brick-concrete structure, it is better to consult the building developer.

It can be unopened, but if it has been opened, it is best not to, the balcony is outside, the dust is also large, and it is not suitable for hygiene, and the balcony can be sunny, and the rain can be splashed, which is more destructive to things, so it is best not to put the balcony.