RE: Order of execution of scripts

Yes, scripts are run in-order.

For AIML scripts, you can also select "merge" when importing to merge them together, if you want their patterns to execute at the same precedence level.

If you have a "*" pattern in a script this should be last (unless it is specific to a topic or condition).
Normally a "*" pattern would not be used in a script, instead you would set the bot's default response from its Training & Chat Logs page.