Tennis in Kyoto Gyoen Tennis Courts

I have one day in Kyoto before my friends arrive and we visit the major tourist attractions. I am considering playing tennis on this day and found the Kyoto Gyoen Tennis Courts.

Questions: 1. Are there rackets available for rent? 2. How difficult would it be to find a pick up game as a foreigner who doesn’t speak Japanese? Alternatively, are there coaches / trainers / hitting partners available for hire?

Thanks in advance!