please I would like to know if I have to reserve a space for. celebrate a birthday

Picnic shelter reservations are made at https://apm.activecommunities.com/montgomerycounty/facility_search?IsCalendar=true&TypeID=83¢er_id=468&KeywordID=0&year=2020&month=11&startyear=2020&endyear=2020

U can gamble with out a permit but some one with one could will bump you

Yes, you need a permit, a reservation for a shelter.