Oracle Client 'link' Download For Windows 64-bit

Yes, as long as you have necessary VC++ Redistributables. No GUI is required.

For full client, download the newer version and run the installer; choose "Upgrade". oracle client download for windows 64-bit

No. The client is free to download and use for connecting to any Oracle database. No license fee is required. Yes, as long as you have necessary VC++ Redistributables