The following are known CTRPF AR Cheat Codes for Mario Tennis Open on Nintendo 3DS (3DS).

00040000000B9100.txt

[9999999 Coins]
0052D3F8 0098967F

[SELECT + UP All Items Bought]
DD000000 00000044
E052D328 000000D0
23232300 23232323
23232323 00002323
23232323 23232323
23232323 23232323
23232323 23232323
00232323 23232300
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 00002323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23000023 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
23232323 23232323
D2000000 00000000

[SPEED/POWERSHOT]
0059E2F4 01E30FFF
 
[SERVICE]
0059E2FC FF5003AC
 
[PLAYER1 SHOTS1]
0059E300 006E505F
 
[PLAYER1 SHOTS2]
0059E308 3FA55A32
 
[PLAYER1 SHOTS3]
0059E304 40A00000
 
[MINIGAME RING TIMER COINS]
0059F838 01000000