When getting food from a buffet, there are some common etiquette guidelines to keep in mind:
Use the provided utensils: Always use the serving utensils provided for each dish to avoid contaminating the food and maintain hygiene.
One plate per person: Take only one plate at a time. Going back for seconds is acceptable, but avoid piling up your plate too high with food during a single trip.
Take what you can eat: Buffets often encourage self-service, but it's essential to take only what you can eat to minimize food waste.
Wait in line patiently: If there's a line at the buffet, wait your turn without cutting ahead. Show consideration for others who are also trying to access the food.
Avoid using hands: In most cases, it's not appropriate to use your hands to take food from a buffet. Stick to the provided utensils.
Close the lids: After serving yourself, remember to close the lids on the food containers to keep the dishes fresh and prevent contamination.
Don't double dip: If there are sauces or condiments available at the buffet, use a clean spoon or ladle each time you take some to avoid double-dipping.
Regarding putting plates on the counter before sitting down at the table, it is not common or standard etiquette to do so. When you're finished serving yourself from the buffet, it's best to take your plate directly to your table. Placing your plate on the counter could cause confusion for the staff and may not be appreciated by other guests trying to access the buffet.
Once you're at your table, you can begin eating. If you need to leave your seat to get more food or use other facilities, it's courteous to excuse yourself from the table briefly. Otherwise, you can remain seated and enjoy your meal.