For this event you get a “free win” for each arena. Unless you only want to collect cards from the new set, it’s much more efficient to play arena. Also, unless you played Hearthstone nearly all day, it would be difficult to blow through all of the gold quickly. I understand that you said you weren’t great at arena, but I played 1 run today and got 10 wins. It was a net gain of 300+ gold. HearthArena is a great tool to help you draft a solid deck.
For this event you get a “free win” for each arena. Unless you only want to collect cards from the new set, it’s much more efficient to play arena. Also, unless you played Hearthstone nearly all day, it would be difficult to blow through all of the gold quickly. I understand that you said you weren’t great at arena, but I played 1 run today and got 10 wins. It was a net gain of 300+ gold. HearthArena is a great tool to help you draft a solid deck.