I have participated in about a dozen Chef's Tables. I book and pay for the Chef's Table when I book the cruise through my travel agent. I usually book B2B cruises and pay for about one Chef's Table for every 2 weeks.
The meal and prepranidal activities are always enjoyable. Rarely, there are group of table mates who have booked together and are very cliquish. This disrupts the normally convivial dining experience.
If you enjoy dining, in contrast to just eating, book the Chef's Table. The additional expense is worth it.
A marvelous experience on our last cruise. A couple across the table from us, with whom we had not had an opportunity to converse, joined us a few evenings later in the Wheelhouse Bar for an enjoyable evening.
Good food, good service, and good camaraderie know no superlative.
I can not recommend this dining experience highly enough. Each of the chefs explain the joy they put into their dish. The sommelier explains his wine nuance and choice with each course.
If a 3 hour meal is within your tolerance, then indulge.
George