Why a group should run one site per venue
A group site with a page per concept reads as one business. Guests, search and the agents they ask treat each venue as its own place. Give each one its own site, and run them together.
Most groups start with one site and a page per concept. It is the cheapest thing to build and the hardest thing to keep. Every venue's hours, menu, reservations and events compete for one homepage, one navigation and one domain, and the group's name ends up on everything a guest sees.
A venue is a place, and search knows it
A guest asks for a table at the restaurant, not at the group. Search engines, maps and now the agents people ask for recommendations resolve a place to a domain. A venue with its own site, its own structured hours and menu, and its own booking is the one that gets named in an answer.
Many sites, one operation
The reason groups avoid a site per venue is the work: a theme to maintain per site, a login per site, a vendor bill per site. On Empress the group runs one theme, one set of integrations and one login across the fleet, and a change to the hours on every site is one sentence in chat. Each venue keeps its own name, colors and menu; the group keeps one place to run them.