this year was last year for jan trip... swimming was barely bearable.... pool sort of heated... freezing outside.
Kids did swim, but because I had to be in the pool with them... well I didn't enjoy it.
This year we're trying to go at a warmer time.
I think you should expect the worst, maybe the weather will work out for you.
Lines at parks were great, but we froze even at the park on 2 of our days at end of jan this year.