For the rest of the tables that your plugin uses internally, you are completely free to name them as you want
Is this also true if we plan to get the plugin through the validation process? Because the plugin validation page says the following:
The names of all database tables should start with the full 'frankenstyle' plugin name. For example block_myblock, or auth_paypal. See exceptions for activity modules below.
Currently our additional tables are called like: myactivity_anothertable
So should we switch to mod_myactivity_anothertable instead?