You should always make sure all the details of your plan are worked out and confirmed before you initiate it.
Obi-Wan: Well it's about time you got here.
Padmé: Don't worry. When the beasts arrive, I'll cast Summon Bigger Fish until they're satiated.
GM: You're playing Padmé! She's not a Jedi. She doesn't have Force powers!
Obi-Wan: That's your reason for not letting him do that?
Padmé: Hmmm. Well in that case...
Padmé: Okay, I have an even better plan.
Obi-Wan: Better than Qui-Gon's plan to win the pod race on Tatooine?
Padmé: It'd be difficult to come up with something that good, but I think I've done it.
Padmé: We taunt the beasts until they're enraged, then we escape from our chains and use the beasts as mounts to fight the guards. Then we take out the leaders, steal their treasure, and make good our escape.
Padmé: Oh, wait! That might not work. Are we in chains?
GM: Er... yes.
Padmé: Right! No problem!