Honestly, you can't convince them. Either they will let you or they won't.
if your parents wont let you get sponsored, well, id yell at em.
you say parents are going with
say please
you ask them
make a deal with them and stick to it :)
tell them you want rats
be a good kid
I have the same question!
come out of the closet
Tell them its a Spanish trip and your parents are allowed to go !
If you can't convince your parents to let you play that, then find something else to do.