The translation is: sit at a table. There is no need to make a reservation. Put your elbows on the table. Put a napkin on top of your legs.
So the answer would be: Sentare en la mesa. Poner la servilleta sobre las piernas.
This is what you would normally do at a restaurant, hope this helps!
Para tomar (to drink) agua, necesitas UN VASO (a glass)
Answer: Preterite (jugó)
Explanation: It references an action that was completed once in the past.