Hi @johnw24248651 , you can use InDesign CC2021 without an internet connection, but it has to be installed on the computer you are working from—that would also be the case with newer versions. However, there will not be an installer available via the Creative Cloud app—only the 2 most recent versions are available for installation, so unless you have an archived version of CC2021 on the computer you are logged into, there will be no way to run CC2021
Also, the only change with locally installed fonts is, Type 1 Postscript fonts are no longer supported. It’s not just Adobe, the latest version of Apple’s MacOS no longer supports Postscript fonts. The end of life for Type 1 has been in the works for years now—most font vendors switched to the OTF format over 20 years ago. If you are trying to protect your legacy Type 1 fonts look at one of the many font converters. This thread might help:
https://community.adobe.com/t5/indesign-discussions/ende-der-unterst%C3%BCtzung-f%C3%BCr-ps-type-1-fonts/td-p/11874314
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