Board locations have a wide variety of effects.
Many locations allow you to recruit Viking Warrior Dice or collect resources. Food, Wood, Coins, Favor, and Blame are unlimited.
Viking Warrior Dice are limited by their supply and each player may only hold 8 at a time as indicated by the longhouse printed on your Viking Leaderboard.
If taking dice would ever cause you to exceed 8 Viking Warriors, take as many as you are legally able and return the rest to the supply. (Warriors will not come fight for you if you do not have room for them in your longhouse!)