Not much different from traditional trip planning though, if you are just swapping from "top AAA recommended" (or "top guide book recommended") to "top Yelp recommended". Having a person involved in something like a AAA trip plan added some variety in terms of inter-personal suggestions/customizations. (Or specialized/niche guide books.)
Arguably Yelp has a massive (maybe a bit stalkery) version of that inter-personal suggestions/customizations at your finger tips in that you can come to get a feel for individual reviewers, especially area Elites, and how well their tastes align with yours. It is possible to find interestingly curated lists of places in an area if you work at it, which isn't that different than the guide book era (though maybe weirder). Certainly not as convenient as paying someone else to do all that trip planning work.
Arguably Yelp has a massive (maybe a bit stalkery) version of that inter-personal suggestions/customizations at your finger tips in that you can come to get a feel for individual reviewers, especially area Elites, and how well their tastes align with yours. It is possible to find interestingly curated lists of places in an area if you work at it, which isn't that different than the guide book era (though maybe weirder). Certainly not as convenient as paying someone else to do all that trip planning work.