Climbing gym birthday invitation mistakes to avoid

It's ten to five on a Saturday and a father is at the reception desk of a climbing gym with a nine-year-old in soft-soled shoes. The party started at half four. The boy's name is on the list; his shoe size isn't, because the invitation never said whether the gym rents climbing shoes or whether each child brings their own. It's the most common of the climbing gym birthday invitation mistakes, and it costs the first twenty minutes of the party. Outside, another parent is still circling the industrial park, phone in one hand, because the address was the only thing written down.

None of that is the gym's fault, and none of it is hard to fix. It's three lines that didn't get written: how high the wall is, what goes on the feet, and what time to actually arrive.

Climbing gym birthday invitation mistakes: the wall and the shoes

Read the words 'climbing gym' and it's easy to picture twelve metres of vertigo. Give the real number instead — 'the tallest wall is 8 metres and everyone starts on the low routes' — and that picture changes before a parent has put their coat on. Then do the same for feet. Say whether the gym rents climbing shoes or whether each child brings their own. Many gyms rent them and ask for a sock underneath, and nobody has a spare pair in a coat pocket, so put it in the invitation rather than in a group chat the night before.

• The height of the tallest wall, and whether there are easy routes for first-timers.
• Whether the gym rents climbing shoes, or every child brings their own.
• Whether socks go with the rental shoes, plus one spare pair in the bag.
• The minimum age the gym sets for climbing, so nobody turns up with a younger sibling who can't go up.

Age, the adult ratio and the waiver line

Gyms set their own conditions, and they're not all the same. Some ask for one adult for every three children, and without that adult the group doesn't get on the wall. Some let parents drop off and come back at the end. Whichever it is, write it down — otherwise you'll have someone standing in the doorway of the unit for two hours because they assumed they were staying.

Every child also needs a waiver signed by a parent or guardian, with a contact number on it. It gets signed at the desk on the way in. Put the line in the invitation and there's no bottleneck at reception with eight families and one pen.

The wall height, the shoe situation and the arrival time. Three lines decide whether a guest climbs or watches.

Arrival time is not the start of the party

Set an arrival time fifteen minutes before the climbing starts. Shoes, harness and the safety talk eat up that time, and a child who turns up at the official start hour misses the first route. Then separate the times in writing: 'climbing 5:00 to 6:30, food until 7:30' keeps a parent from arriving to collect their child exactly as the cake is cut. And if the gym hands the wall over to another group at a fixed time, say so — a 5:00 to 8:00 party isn't the same as an afternoon with the wall only until 6:30.

The door, the car park and who's coming

Many climbing gyms sit in industrial units with the entrance round the side. 'In through the side door, next to the gravel car park' saves ten missed calls. If the way in is not the main door, write that too. A map inside the invitation means nobody copies an address by hand or hunts for it while driving.

For the RSVP, ask what you actually need to know: how many siblings are coming and whether anyone needs a different harness size, because the gym reserves kit by number. Give a deadline — the Tuesday before, say. Twenty separate messages never tell you whether nine children are coming or fourteen. And mention the food: the cake gets cut in the room, not at the foot of the wall.

Before you send the link, check that the wall height, the shoes and the arrival time are in there. It's three lines, and they decide whether a guest gets on the wall or sits at the side. With a digital invitation you can correct the time, the door or the size of the group after sending, and the same link always shows the updated version.