So I just got my MTC address and this will only be good while I'm in Provo which is only about 3 weeks so I'm not really sure yet what happens when I go to the Guatemala MTC but here's this for now.
Sister Rebecka Leona Nielsen
MTC Mailbox # 237
2005 N 900 E
Provo, UT 84604-1793
Thanks everyone for supporting me and I'll miss you all!