1. Ticket:
* Obtain: This ticket is given to you by the Contest Girl after you complete the Pokémon Contest in Slateport City.
* Use: This ticket is used to board the S.S. Tidal in Slateport City.
2. Eon Ticket:
* Obtain: This ticket can be obtained by completing the Seafloor Cavern event. To do this, you need to:
* Talk to the Old Man in Slateport City who tells you about a legend.
* Enter the Seafloor Cavern located to the south of Slateport City.
* Go to the end of the cave and talk to the Sailor.
* Defeat the Trainer who appears in front of the ship.
* Collect the Eon Ticket from the ship's deck.
* Use: This ticket allows you to access the Island Cave which is located to the south of Slateport City. Inside the cave, you can catch Latias (Emerald Version) or Latios (Ruby/Sapphire Version).
3. Old Sea Map:
* Obtain: This map is a reward for completing the Battle Frontier in the game.
* Use: This map allows you to access the Battle Frontier again after you've completed it. It also helps you find hidden treasures in various locations around the region.
4. Other Tickets:
* There are no other tickets in Pokémon Emerald. The three mentioned above are the only ones in the game.
Note:
* The location of the Seafloor Cavern and the Island Cave vary depending on whether you are playing the Ruby, Sapphire, or Emerald Version. Make sure to check the correct locations for your version.
* The Eon Ticket can also be obtained by trading it from another player who has it.
* You can re-obtain the tickets after losing them by following the steps above.
Remember to save before attempting to catch Latias or Latios as they are very rare Pokémon!