Yup! You'll only miss out on a the edited move descriptions if you play Rebalanced, and maybe one or two minor text edits in other places. All of the important stuff should work fine.

As I've asked to you before with EXWY, is it safe play Photonic Sun and Prismatic Moon in Spanish?

No problem, I probably should have listed that somewhere in the documents.

I completly forgot that. Thanks and apologizes!

You can get Aerodactyl the same way you get it in the official games, just smash rocks in Glittering Cave until you find an Old Amber, then take it to the fossil lab to be revived. Might take a while to find one but they're definitely available.

Seemz that Aerodactyl isn't catchable. That makes me feel sad.

Unfortunately not, custom banners are only available if you build and install a .cia file of the game. It's a bit of a hassle to do and isn't really worth it just for a banner in my opinion.

It's possible to see custom banner on a cartridge using Luma?

Only if you want eggs to hatch quickly, otherwise it doesn't add anything.

The 2.2 update is obligatory to Rebalanced version?

There are one or two small text changes, but they're not important so you can safely play it in Spanish. The edited title screen won't appear in non-English languages, but all the game play changes will work fine in any language.

Also can I play it on spanish or did you change spme texts?

Yeah, I'd recommend Rebalanced or Legal, depending on whether or not you like the Pokemon changes I've made. They have very similar difficulty levels, so which one you play is just up to personal preference.

Which version is recommended to play: Rebalanced?

I have a flashcart for my DS somewhere, but I don't know if it is compatible or where I put it xD. Probably I will buy one on december :)