keep the group small
Even numbers but not just couples.
Keep the dress smart casual.......t-shirts and thongs dont look good.
Try to meet the people first online private cam or in person.
avoid getting a group that plan on using your house as a fuck house for the night just for the close circle.
Try to spead the demographic but keep within what the group are after. hence chatting with them before you invite them.
Allways have a couple of back ups people always get cold feet....
Guru