Not sure what the relationship might be--meaning I don't know if you are "fighting" for members--so to speak.
But if Aikido and Kendo are doing well, they might be willing to work with you to put on larger/more frequent demo's that showcase all 3 styles.
Everybody wins.
You might even recruit from the other 2 styles and vice-versa. Maybe some of "your" people might have an interest in the "other" arts.
Yes, I'm aware that the hunter that chases 2 rabbits generally catches neither---but lots of people study more than one art.
You also might highlight some of the non-sport advantages of classical training.
Good luck!
Chris Thomas
"While people are entitled to their illusions, they are not entitled to a limitless enjoyment of them and they are not entitled to impose them upon others."
"Team Cynicism" MVP 2005-2006
Currently on "Injured/Reserve" list due to a scathing Sarcasm pile-up.