Mulled wine would be better for an evening do - you can dilute it a bit more (canny Scot here) with the orange juice, but seriously as people may wish to drive, it is less alcoholic. Is it an evening or a daytime do? If daytime, I'd do Buck's Fuzz with Prosecco (waste of good champagne) because again people can drink lots and be "merry" without too many side effects.
Taking dogs on holiday in summer

better get practising 