I think it will be nice the local date and time shown in reservation choice panel, blank invite and invites to the guests, have also the same timing expressed as Server Time.

Something like "9pm LT / 10pm ST", I meant, as example of someone one hour before server time zone.

Server time is something we all can referrer to without mistakes caused by incorrect timezone pc/console setup, so adding it will help a lot to avoid misunderstandings, imho.