"Excuse me, Earthlings. At 6 PM tonight, will you be eating dinner? I don't want to beam down into your kitchen while you are busy. Also, when the sun rises tomorrow, will we be visiting the shopping mall? I need to know exactly when to put on my human disguise."

The Future Continuous is often used to ask politely about someone's plans, or to ask about an action that will be in progress at a specific future moment ("at 6 PM", "when the sun rises").