My husband and I aged 56 and 50 did this for a laugh, and that's exactly what it was. Our guide Jeremy was fun, and the group we were with were all friends, but it's a good experience to meet new people.
We got to get out of Waikiki it's only a 13 Uber away, and we went to 3 pubs we would never have gone to otherwise.
Would I do it again... No, but it's a thing you do once and then next time you just go directly to the pubs you went to on it. It's a gimmick, and lots of fun. Do it once!