Fastest Post Game Training + Quick Money

Requirements:

• Enough style points to enter restaurant Le Wow
• At least 100,000 Pokedollars

Recommendations:

• Lucky Egg (Found in Coumarine City Hotel)
• Amulet Coin (Parfum Palace, it's in a fireplace in one of the rooms)
• Moves that can take out 3 Pokémon at once
• Maximum friendship
• Level 3 Exp. Point O-Power (Level 2 or 1 will also work; it's found in the Anistar City Pokémon Center)

Procedure:

1. Fly to Lumiose City, North Boulevard
2. Enter Restaurant Le Wow (click here for a map of Lumiose, it's marked "D" on the map & in-game is the black building with three stars above the door)
3. Use the Exp. Point O-Power (open the PSS menu > O-Power > Exp. Point level of your choosing > use)
4. Talk to the check-in lady and tell her you'd like to dine, then select Triple Battle.
5. Battle the trainers. Completing it in the recommended amount of turns is not necessary; however, it will net you more prize money at the end.
6. Exit the restaurant and re-enter, then repeat the process!

Statistics:
Garchomp (Full Affection/Lucky Egg)
Normal Audino Kill:7,897 Exp. Points
Exp O-Power 1 Audino Kill: 9,476 Exp. Points
Exp O-Power 2 Audino Kill: 11,845 Exp. Points

Bonus Exp % Rate:
EXP Power Lvl 1: 20%
EXP Power Lvl 2: 50%
EXP Power Lvl 3: 100%

Number of Balm Mushrooms/run:
16-18
Balm mushrooms are worth $6,250 each.

Enjoy, and if you have any questions, feel free to ask!