Location doesn’t matter I don’t think, unless you wanna hang out with the Asia and EU folks. Also, I believe being on the same world as your guild mates allows you to join the same “instance”/map as them. I could be wrong though, I’m pretty much in your shoes (+2 months).
I saw in a previous comment that you have many EST players! I love event-packed guilds like yours, but have only been in EU guilds despite being EST myself. I’m relatively new, starting my account in August (Boosted Mesmer, 47 Necromancer, and 33 Warrior). Could you send me an invite?