Q: What are the requirements and exclusions for holding Eid gaah (Musalla) on an open piece of land?
A: EIDGAH REQUIREMENTS
The sunnat Eidgah is that which is situated on the outskirts of the suburb. It won't matter if one or two houses are nearby, because the Eidgah of Rasoolullah (sallallahu alayhi wasallam) was adjacent to the house of Katheer bin Sult (radhiyallahu anhu).
If possible a mimbar should be built at the Eidgah, or else one should be taken out when people go for the Salaah.
Eidgah cannot be held on a sports field or in a stadium, for these places are normally inside the town. Besides, these are places where many evils occur, hence it will be makrooh to have Eid salah at such a venue.
The above are the basic requirments to establish an Eidgah. In the Hanafi math-hab it is sunnat muakkada to offer the Eid salah at the Eidgah even if the Musjid is big enough to accommodate all the people. However, if weather does not permit this, then the Eid salaah will be performed in the musjid.
However in the Shaafi' math-hab it is better to read the Eid salaah in a musjid, unless the musjid is too small to accommodate everyone. Then they will also utilize the Eidgah.