Beginners Polo

There will be plenty of bikes, don't worry.
I'm not sure about starting out clipless but ending up clipless is a great idea, so if you don't mind falling off then perhaps starting out clipless is a good idea.
If it's what you've got then all good.
Checking the OP for polo bike set up as well as safety is a good idea. You'll need the brake on the other side from your mallet hand, and low gearing would be a good idea too if you can.
Just come, watch, play learn, all will become apparent.

I have been well educated by a friend who plays polo every week, he plays in NE I think... with him telling me how he wants to improve his polo bike regularly, I have a pretty good idea, but just can't really afford to change anything on it until later on in the summer. But I am looking at some dual brake leaver, think it's a good idea for everyday ride too.

Anyway, see you this evening.