I have decided to travel from Perth to Adelaide for my 40th birthday in May. There will be around 15-20 people coming from Interstate. I am looking for something special, not too formal, splendid food & wine. Maybe a bit off beat....Budget is pretty healthy for the evening. Happy to book private area, but it is a only a small group. Appreciate any suggestions - bars, venues, restaurants, activities or close by wineries doing dinner (I suspect there will be late night trip into town afterward. Thank you for any ideas.