Having an exploratory meeting? Ask how will the feature be tested.
Exploratory meetings should include the question 'how this functionality will be tested?' up front. Without responding to that fundamental question an exploratory meeting will be setting the stage for yet another functionality that is not completely tested.
Manual Exploratory test should be done only once, it should be documented so it can be automated from the User Interface. The User Interface brings not just the perception about how how good the application works. The User Interface is •how• the application works.