there are lots of places!! at stonegate you are able to provide the meat and it can be zabiha. most halls do allow outside catering. most people go with usmania or sabri!
I got married last year and my wedding was at stonegate. the food turned out great and everyone loved it!!
for henna i went to some random aunty that my aunty referred. she was just okay. decor I went with this guy named Yanni. He is sooo good!! the hall looked spectacular!! his website does not do his work justice!!