[header] How to throw a sushi dinner party [title] Prepare sushi rice in advance. [step] You may want to cook this at the last minute so it will be still warm when your guests arrive. Avoid refrigerating the rice at all costs, as the rice will dry up and have a different texture, even when microwaved. 
Depending on the amount of people planning to arrive, you might want to reserve a pot of rice for every four or five guests (about a cup of rice per person). Provide bowls of water on the side for rice scoopers.