Open Play Capacity: How to Count Kids When Families Arrive Whenever They Want

If families can arrive at any time, count open play capacity by how many kids are on the floor at the busiest moment of each visit, not by how many bookings touch an hourly block. Block counting is simpler, but it turns away families who would fit and lets the floor feel fuller than the numbers say.

A play cafe owner put it to us plainly: a parent walks in at 1:15 and wants 1:15 to 2:15, but the system only sells 1 to 2 and 2 to 3. Do you turn them away, sell them a block they will only half use, or squeeze them in off the books?

Why hourly blocks get open play capacity wrong

Most booking tools sell open play the way a gym sells classes: fixed windows with a cap on each one. That works when everyone arrives at the start. Soft play does not work that way. Families come after naps, after school pickup, after lunch.

When a visit crosses two blocks, block counting charges it against both. Your cap fills up on paper while the floor still has room.

A worked example with a 30-kid cap

Saturday afternoon, cap of 30 kids:

• 1:00: a group of 12 kids, staying until 3:00
• 1:15: a family of 3, staying one hour (until 2:15)
• 1:40: a group of 10, staying two hours (until 3:40)
• 2:30: a family wants to bring 8 kids

Block counting: the 2 to 3 block already has 12 + 3 + 10 = 25. Adding 8 makes 33, so the 2:30 family gets turned away.

Counting kids on the floor: the family of 3 left at 2:15. At 2:30 the floor has 12 + 10 = 22 kids. Adding 8 makes exactly 30. They fit.

Same room, same cap, one more booking. On a busy weekend that difference adds up across the day.

Pick an arrival grid and visit lengths

You do not need to accept arrivals at any minute. Pick a grid your front desk can live with:

• 10 or 15 minutes if walk-ins are common and families arrive in a steady trickle
• 30 minutes if you want simpler check-in and fewer odd start times

Then set the visit lengths you sell, such as 1, 2, or 3 hours. Shorter grids fill the floor better; longer ones are easier to staff.

Price by visit length, not by slot

Once arrival times float, the price should follow how long the family stays: a 1 hour, 2 hour, or 3 hour visit. If you sell play passes or memberships, let a pass cover the same visit lengths so a member and a card-paying family book the same way.

Keep walk-ins on the same count

The quickest way to overfill the floor is a walk-in clipboard that never talks to online bookings. Walk-ins and reservations should count against one cap. If your front desk has to add up two lists on a Saturday, the count will be wrong by 2 p.m.

Do not show times families cannot book

If a time is full, or a 3 hour visit would run past closing or into a full stretch, hide it. Showing a time and then rejecting it at checkout is how you get phone calls and lost bookings.

Weekends with birthday parties

Parties change the math. If a party takes over part of the floor or a room, open play capacity for those hours should drop to match. Keep parties and open play on one calendar so nobody sells the same space twice. More on that in our guide to birthday party booking software.

A quick checklist

• Count kids on the floor at the busiest moment of each visit, not bookings per block
• Pick an arrival grid (10, 15, or 30 minutes)
• Sell visit lengths and price by length
• Put walk-ins and online bookings on one cap
• Hide times that cannot be booked
• Lower open play capacity when parties use the space

How ProgramChamp handles it

ProgramChamp has flexible start times for open play. Families and staff pick an arrival time on a 10-minute grid and a visit length. Capacity counts kids on the floor during the visit, and the booking page only shows times that still fit. See how it fits into open play scheduling software for soft play centers, or read our overview of indoor playground software.