Help Make Wray & Nephew less harsh for my friends

Hey everyone! I really like drinking wray and nephew but if you’ve ever tried it you know how harsh it can be and tastes, it’s sitting a 63%. It’s my birthday today and my friends finally agreed to drink it again with me 😈 they really didn’t enjoy the taste and harshness at all, what’re somethings I can get to make it less harsh? I know juice/soda is a go to but is there anything else I can do to make it a better experience for them?