Waits at hotels and shops depend not only on the staff and the number of guests but on when rooms are vacated, how long people may stay and how often they order. Here are five examples from hotels, banquets, a karaoke box and an izakaya (a Japanese pub-restaurant) that an AI simulated in earlier articles, with the tool it calls over MCP (sweep_process_parameters); each figure is the mean of 20 runs.

1. By set-up

ExampleSet-upWhat is measuredResult
A hotel's housekeeping (12 rooms, 25 minutes per room)One housekeeperWait for a housekeeper once a room is vacated80.1 minutes
A hotel's housekeeping (12 rooms, 25 minutes per room)Two housekeepersWait for a housekeeper once a room is vacated25.6 minutes
A hotel's housekeeping (12 rooms, 25 minutes per room)One housekeeper, a quarter checking out lateWait for a housekeeper once a room is vacated44.9 minutes
A hotel's public bath (150 guests)Three wash basinsMen's wait for a wash basin (to use a dryer)12.4 minutes
A hotel's public bath (150 guests)Four wash basinsMen's wait for a wash basin (to use a dryer)2.3 minutes
A hotel's public bath (150 guests)Five wash basinsMen's wait for a wash basin (to use a dryer)0.4 minutes
A banquet's cloakroom (200 guests, 40% with a coat)Two staffMean wait after the party11.3 minutes
A banquet's cloakroom (200 guests, 40% with a coat)Three staffMean wait after the party5.9 minutes
A banquet's cloakroom (200 guests, 40% with a coat)Four staffMean wait after the party3.2 minutes
A karaoke box's Friday night (10 rooms, 20% of groups stay three hours)4 groups an hourGroups who gave up and left0.5 groups
A karaoke box's Friday night (10 rooms, 20% of groups stay three hours)6 groups an hourGroups who gave up and left3.2 groups
A karaoke box's Friday night (10 rooms, 20% of groups stay three hours)6 groups an hour, a two-hour capGroups who gave up and left2.3 groups
An izakaya's all-you-can-drink (two hall staff)Each guest orders every 20 minutes, one drink makerTime for a drink to reach the table45.5 minutes
An izakaya's all-you-can-drink (two hall staff)Each guest orders every 20 minutes, two drink makersTime for a drink to reach the table1.7 minutes
An izakaya's all-you-can-drink (two hall staff)Each guest orders every 30 minutes, one drink makerTime for a drink to reach the table12.1 minutes

2. What they show

  • One more drink maker, cloakroom attendant or housekeeper. A second drink maker cuts the wait for a drink from 45.5 minutes to 1.7, a third cloakroom attendant cuts the cloakroom wait from 11.3 to 5.9, and a second housekeeper cuts the rooms' wait from 80.1 to 25.6.
  • Rooms vacated at different times help even one housekeeper. With a quarter of the guests checking out late, a vacated room waits 44.9 minutes for one housekeeper instead of 80.1.
  • Where the number of fittings decides the wait, add one at a time. At the bath the wait is 12.4 minutes with three wash basins, 2.3 with four and 0.4 with five.
  • Cap how long people stay. With 6 groups an hour, a two-hour cap cuts the groups who give up and leave the karaoke box from 3.2 to 2.3.

3. The articles

4. How to ask an AI

In this banquet hall (as drawn, 200 guests), with the 40% who left a coat collecting it after the party, compare the wait with two, three and four cloakroom staff, 20 runs each.

5. What this does not cover

  • The numbers of people and groups, and the times to clean, bathe, hand over coats and make drinks, are each article's assumptions. Replace them with your own hotel's or shop's records.