Sorry should have been clearer. - There will be a maintenance page with a link to our Facebook page whether or not people visit it is entirely optional. The idea is to simply give our community another place where they can discuss and continue to be part of just that, a community.
I was not involved in any major updates previously, so I cannot comment on those but the short answer is no. As for the long answer, I have planned it as follows;
The migration is being done in such a way that preserves the site on the original server. I will take the site offline, followed by taking a copy of the site including the database, transfer it to a different/much more powerful server, upgrade it to the new version of the forum software, address any configuration issues and then point the domain canalworld.net to the new server via DNS. Should the migration not be successful or should it take longer than expected we will point the domain back to the original server and continue the work at another time. This approach keeps risk to a minimum and allows me to "abort" without implicatons should the need arise.
In addition to that, we have full site backups which are hosted in multiple locations in the UK, US and France.
A further server migration will later be scheduled but more on that nearer the time.
There is a likelihood we will encounter some teething issues and as such this is a rolling work in progress as we will look to make continual improvements based on user feedback. (wherever possible) We have also carried out testing and have successfully updated the site a number of times in a test environment. Some issues we can expect to see are browser caching issues and DNS propagation issues but I will be around to assist with these as and when they arise.
I tried to keep it as non-techy as I could but hopefully it will help give some confidence.
Rich