The cake is logistics
Birthday cake logistics for a venue party: who carries it, candles, dietary splits, and where it waits.
Who carries it, and where it waits
Who is bringing it, where it goes, and when it appears. A cake in a hot car for an hour is a cake you will apologise for. Ask the venue for a fridge or a cool room, and name the person who is not also carrying a toddler.
Candles outdoors need a windbreak and a venue that allows them. Indoor venues sometimes ban flames because of soft play or thatch. Battery candles are not a humiliation. They are how you still sing the song.
Dietary splits belong in one plan
One plain, one chocolate, one free-from should be decided before the bakery, not in the car park. If you can, keep them in the same shape so you are not running two ceremonies. Label the free-from cake on the board, not just in your head.
The venue's dessert, if there is one, is not a substitute you can quietly cancel. If children have already been promised their ice cream, the cake is extra. Say that, or you will have a queue of children who ate both and a parent who is cross about sugar they did not agree to.
The moment belongs to the child
The birthday child blows. You do not auction the moment to a confident uncle, a mascot, or the most organised parent in the room. Gather people, sing, cut, move on. A long speech in a soft-play hall is how you lose the room.
Take the photograph then, because afterwards the cake is crumbs and the children are gone into the next activity. One person on camera is enough.