QUES: Actually a problem solved very fast A connector had some corrosion and it was changed with a new one

correct the punctuation.

CORRECTED: Actually a problem solved very fast: A connector had some corrosion, and it was changed with a new one.

QUES: A security deposit of AUD 500 is required upon arrival for incidentals This deposit is fully refundable upon checkout and subject to a damage inspection of the accommodation

correct the punctuation.

CORRECTED: A security deposit of AUD 500 is required upon arrival for incidentals. This deposit is fully refundable upon check-out and subject to a damage inspection of the accommodation.

QUES: Any any journalist some analysts some in politics in government says that rather than rising far in n Rhet is Las Vegas Sands Corporation because we are experts in swimming that they are looking for

correct the punctuation.

CORRECTED:
Any, any journalist, some analysts, some in politics, in government, says that rather than rising far in n Rhet is Las Vegas Sands Corporation, because we are experts in swimming that they are looking for.