Don't think Burns drank much, if any, whisky? His health /constitution was not great, so he mainly drank ale as did most folks in that time (water was not 'treated' in the 1700s!)
Another gripe I have about Burns Suppers is - why on earth do people wear tartan/ Highland dress? His fathers ancestecedents came from Argyll, near Taynuilt, but his father farmed in the North East, then moved to Ayrshire hodden grey would have been the apparel there!