So I have a friend who is turning 30 and I want to throw a small party but I have no space, what should I do?!
Try a nice but low-key hotel. They sometimes offer rooms for parties and such at a decent price too.
Silly something to make them forget the 30 part...make arrangements at a McDonald's or Pizza Hut for a Kids party. Just leave out the kid part.
find a cool place that is having a happy hour and have everybody meet there and chow down on the food and drink specials.