Yes! This is up to your discretion, especially if you are traveling from abroad.
If your invitation says "and guest", then yes!
For the Sangeet and Wedding ceremonies, we are hoping to have a final headcount one month ahead of the respective events.
For the UK: Currently, vaccinated US residents can travel to UK provided that they fill out a passenger locator form. More information can be found through your airline, or via https://www.gov.uk/uk-border-control/ For the US: All foreign travelers must have proof of vaccination and negative test result within 24 hours. UK residents can apply for a visa waiver, please check to see if the USA would require a tourist visa from your country.