I understood the 'ideas' in the subject line but I don't understand your Spanish. Sorry I can't help.
Hello,
I too don't understand spanish but if it's for a pool party for 50, heres a cake that looks great. I would imagine it too serves 50.
http://www.cakecentral.com/cake-photo-885843.html
Hope you get some more ideas.
Leigh
Pues a la verdad q hay q pensar un poco, por lo menos las q no hemos hecho ese motivo. Para tener mas o menos una idea pensar lo q hay de ese motivo: flores, palmas, mascaras tiki, pinas, flamingos, bikinis con cocos, faldas de hibiscus ( la paja esa) Tablas de surfing, sandalias de playa (mete dedos), la palabra Aloha, etc. Esas son algunas cositas de ese motivo, de ellas pensar a lo mejor es un poco mas facil. Si se me ocurre algo chevere vuelvo a escribir. Suerte amiguita, 
K-rinos...
Yeah, what nimsi said...tiki masks, palms, pineapples,...etc...I do like the cakes with the hibiscuseseses and sand oh oh oh....and shells...what about shells???
http://www.cakecentral.com/modules.php?name=gallery&meta=search&type=full&search=hawaiian
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