Two part puzzle. Coords to WP1 are before you, along with
almost all the info you need to decode the final.
The missing key is in WP1, of course. WP1 is in a high-muggle area
so stealth is a definite requirement.
Final is a .50cal in a wooded area.
BDUTA JKATK XZNQS SSIAQ EBAYS
YNAFK GAFSB VMBWE HDPID LKFVT
TZOBA OHLHA OWJQD ANAFP JQSSX
MFPWZ CWTBQ UAZGS XKUUS XHWKM
QWFQG XQIEN GDGTM BUVYE ICPID
LDQHH LMQGG GYCHE FPWPS VKMQA
HMFIT LPBWZ HDMPQ JDMQZ UQDLK
NOZXL UVSBW TYWDB ZQAXG CFMKM
BSMPQ VXUBS MPQWF XMIAZ QMVUU
XMUQZ KQBCX XDQEQ TDKBT MVQQX
FIXXG DHXHV ASSKW VNMEA AFKPL
IRIAD PXMWR DWDPX TOQWO QZAAI
BXQOO RAQZO
Please observe the park hours at the final.
Congratulations to TazD for the FTF!