Yes, there are daily and yearly rates, not monthly. It is $4.50 for adults and $1.50 for kids for one day if you're not Indian harbor residents, and slightly cheaper if you are. The yearly rate for a family is around $350. The rates are posted on a bulletin board at the pool.
Yes, it's a monthly fee.
Are they open til winter
Yes, they have a varied pool schedule. Call them first
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