"We are eating at the table."
Translation:Wir essen am Tisch.
And yet, I've come across these as correct answers:
• Sie sind am Mittagessen.
• Sie ist beim Mittagessen.
After the first one, I assumed I could use "am" for the second, but it was incorrect. This is the #1 reason I became confused... so I'm still scratching my head as to why it's correct in the first case and not so in the second.