게 드시다

enjoy your meal (honorific eat)

드시다 is the respectful verb for eating, and six of these eight lines are 맛있게 드세요 in one form or another — literally 'eat deliciously', in use simply 'enjoy your meal': 맛있게 드시고 기분 좋게 식사하세요, [본격적 식사 타임 레츠고] 맛있게 드십시오. It is what a host, a cook, or a restaurant says as the food lands. Because 드시다 is honorific, you say it to someone else and never about your own eating.

Register: honorific; said to the person eating