Sunnahs and etiquettes of eid:
PART ONE:
1 – Doing ghusl before going out to the prayer.

It was narrated in a saheeh hadeeth in al-Muwatta’ and elsewhere that ‘Abd-Allaah ibn ‘Umar used to do ghusl on the day of al-Fitr before going out to the prayer-place in the morning. Al-Muwatta’ 428.

Al- Nawawi (may Allaah have mercy on him) said that the Muslims were unanimously agreed that it is mustahabb to do ghusl for Eid prayer.

The reason why it is mustahabb is the same reason as that for doing ghusl before Jumu’ah and other public gatherings. Rather on Eid the reason is even stronger.
2 – Eating before going out to pray on Eid al-Fitr and after the prayer on Eid al-Adha:

Part of the etiquette is not to go out to pray on Eid al-Fitr until one has eaten some dates, because of the hadeeth narrated by al-Bukhaari from Anas ibn Maalik, who said that the Messenger of Allaah (peace and blessings of Allaah be upon him) used not to go out on the morning of Eid al-Fitr until he had eaten some dates… of which he would eat an odd number. Al-Bukhaari, 953.

It is mustahabb to eat before going out to emphasize the fact that it is forbidden to fast on that day and to demonstrate that the fast has ended.

Ibn Hajar (may Allaah have mercy on him) suggested that the reason for that was so as to ward off the possibility of adding to the fast, and to hasten to obey the command of Allaah. Al-Fath, 2/446

Whoever does not have any dates may break his fast with anything that is permissible.

But on Eid al-Adha it is mustahabb not to eat anything until one comes back from the prayer, so he should eat from the udhiyah if he has offered a sacrifice. If he is not going to offer a sacrifice there is nothing wrong with eating before the prayer.

Tnx

May ALLAH increase your knowledge

Amin and you too.

Alhamdulilai

Thanx for sharing, may Allah bless you

For the big Eid, you are not supposed to eat before going to the prayer ground. When you come back, you are supposed to est first from your ram if possible and if not eat anything you like