I had a surprise 4oth Golf birthday party for my husband.  I invited his friends who are all golfers to a golf course and surprised him there.  They broke off into groups of 4 and played a round of golf. Lunch was set up at the halfway house for them.  When the round was finished all the wives met their husbands under the tent near the 18th hole and we surprised my husband again. Dinner, cake, and dancing followed the round of golf under the tent.  I received thank yous from all of my husbands friends several days later for inviting them and having a great time.  They all thought it was a great day.