I am playing as a cleric of Fharlanghn in my first D&D campaign ever. We are using 3.5 rulings and only the handbook to get our feet wet. This gives me access to the luck and travel domains which look attractive based on other games I have played (frequent computer gamer).
The mechanical question I have is around domain powers (since domains have "domain powers" and then "domain spells"). I know that domain spells are brought into play through the allowed domain spell slot. Are domain powers just an ongoing ability that I have access to? For example, will I always have access to the reroll power granted by the luck domain as well as the freedom of movement power from the travel domain to utilize when needed? Or is there a prerequisite that I missed when reading?