I'm still editing this, so please excuse me for the slight delay. :3
Restaurant Le Nah
- $2,700 - $3,000 (depending on style)
- Has Pansage and Pansear at Level 10
- Has Pansear and Panpour at Level 10
- Has Pansage and Panpour at Level 10
- 15 TinyMushrooms maximum
Restaurant Le Yeah
- $13,000 - $15,000 (depending on style)
- Has Emolga, Mantine and Sigilyph at Level 31
- Has Pidgeotto, Dugtrio and Shuckle at Level 31
- Has 3 Zangoose at Level 31
- Has Simisage, Simisear and Simipour at Level 31
(If you use the Amulet Coin you repay your entrance fee. And even without there's a good chance the prize at the end will repay your entrance fee.)
- 20 Big Mushroooms maximum.
Restaurant Le Wow
(The Pokemon in italics are the Pokemon that only appear in the Triple or Rotation Battles against him/her.)
- $90,000 - $100,000 (depending on style)
- Has Druddigon, Ferrothorn and Qwilfish.
- Has Alomomola, Amoonguss and Audino.
My Pokemon aren't strong enough to get to Restaurant Le Wow or Sushi High Roller - I've gone on YouTube for some of these, but I can't find anymore. Sorry, but for now,
Hope I helped. :)
Source, Source, Source and Experience