In Argentina, such as Buenos Aires' EZE and AEP and most places in South America, expect an early clearance to land, as Fouga Magister described above. I think it is ridiculous to have to ask for a clearance on a low-visibility (CAT.II) approach, when you are very busy for landing a few seconds within your flare and touch down.
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Most places, you are instructed to call the tower at the OM, and they will clear you for landing ("at your discretion" is implied) at your first call, even if nš 1 is in short final. Should that aircraft be late vacating the runway, the tower will be instructing you to go around accordingly.
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Or approach control will clear you to land, and instruct you to call tower
after landing.
Outstanding ATCO, even if you dont like their accent.
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Happy contrails