Draught beer on tap trumps what I offer: I have a wee Beach Bar at the foot of my garden that accommodates one person behind the bar, a standard-sized fridge and three stools in front of it. Leaving the french doors open it is largely used to access the fridge when there are more than a handful of people. I subsequently also bought a potting shed that I made into somewhere where 8 people can sit and eat. Both erections are adorned with naff lights, cheesy signs, beach paraphernalia such as shells and pebbles, assorted beach-themed junk, nets hanging from the roofs, small music speakers etc.
I tend to have a Beach Bar evening once a month between Easter and October (themed, of course) and invite different sets of 7 people each time. However, the nearest beach is half an hour away...