Simplify the following text for a Grade 9 native English-speaking person.
Original: These Eid prayers are supposed to be offered in large groups , and so larger mosques will normally host them for their congregants as well as the congregants of smaller local mosques . Some mosques will even rent convention centers or other large public buildings to hold the large number of Muslims who attend .
Simplified: Larger mosques will normally hold them for their own communities as well as the people from smaller local mosques .