Small group of professionals who got covered hotel and maybe traveling expenses. They have slow movements, absentminded eyes as students just prior an important examine. In his games there is absolutely no joy.
Old people and disabled (rolators, walking canes, wheel-chairs, etc.), sometimes accompanied by his spouses carrying their jackets or sweaters, and thermoses. They play each stubborn (persistent) game to the end, it's a kind of a therapy.
Kids and young hopes (most of them talentless, only a few future masters or regular players) escorted by families, their ambitious fathers and worrying mothers walking among the boards.
Chess lovers (age 30-60 /plus healthy and active elder people), usually loners, young retirees or lotto winners or happy middle-class members) who know they won't win but they hope in
each new game as tenants in some hotel in a David Lynch film.
They like that sense of competition which tournament gives to the games (*umpire, rules, clock - this is more than a free game in the park).
Fistful of girls (*ladies, women, even one or two grandmothers) of which the good looking are pictured for the tournament site already during Round 1.