Place it at the exact moment the plan is agreed, then follow it with Kids Cheering to celebrate the decision, or follow it with Gato Riendo when the joke is that everyone agreed too quickly.
About this sound
This three-second Spanish voice clip says the playful line about how fun something is and joining in with Pepe, delivered in a light, amused tone that makes the invitation feel spontaneous. It gives a cheerful, up-for-anything feeling, like laughing along and agreeing to take part before the moment passes.