The House Marais Set is a special set of items in Elden Ring, exclusive to those who pre-order the game. It includes a variety of exclusive items and bonuses such as armor and weapons, as well as access to a special area in the game.

The House Marais Set is designed to provide players with an advantage in the game, as the items give them additional protection and damage, while the special area gives them access to unique events and rewards.

If you've pre-ordered Elden Ring, here are some tips on how to make the most out of the House Marais Set:

1. Equip the armor and weapons as soon as possible. They'll provide you with added protection and damage, which can help you survive more difficult battles.

2. Explore the special area as soon as you can. It contains unique events and rewards, so don't miss out on any of them.

3. Make sure to upgrade your armor and weapons whenever possible. Upgrading them will make them even more powerful and useful in battle.

4. Take advantage of any special events or rewards that you come across while exploring the special area. They can provide you with valuable items and bonuses.

5. Don't forget to collect the special items that you find in the special area. They can be used to craft special weapons and armor, so make sure to keep an eye out for them.

These are just a few tips on how to make the most out of the House Marais Set in Elden Ring. With the right strategy and a bit of luck, you'll be able to make the most out of the set and gain an advantage in the game.