Please capitalize where necessary: standard double or twin room (double)
A: Standard Double or Twin Room (Double)

Q: you are here newsrelease of the government's energy proposal: the north sea supports the green transition

A: You are here NewsRelease of the Government's energy proposal: The North Sea supports the green transition

Q: the visa electron card is part of the visa network.
A: The Visa Electron card is part of the Visa network.

Problem: he was rich, spending little on everyday comforts but he had one great love, namely that of buying property.
Can you repeat this sentence, but capitalize it?
Answer: He was rich, spending little on everyday comforts but he had one great love, namely that of buying property.

Text: now, where are you tonight, sweet marie?

Correct capitalization: Now, where are you tonight, sweet Marie?

Text: the synergy gains from the merger between brahma and antartica, the two brazilian brewers who formed ambev, has exceeded expectations.

Correct capitalization:
The synergy gains from the merger between Brahma and Antartica, the two Brazilian brewers who formed Ambev, has exceeded expectations.