Do you have to pay

Also: NO RENTRY WITHOUT ADDITIONAL PAYMENT

Yes. For county residents it's $5 for kids,$7 for adults. I believe 2 and under free. Seniors are cheaper too

Yea you do have to pay if you live in d.c you pay a little more.Oh yes you must show your ID as well

Yes. MoCo residents get a discount. Need to show ID with address

Yes, but it's worth it.

There is a 10 swim card, monthly or annual pass that gives the most access. All depends what you want? However, nothing free. Only if a guest.

Yes