|| Dear Rabbi,
1. May one enter a pool/swim on Shabbat if one has a pool in his/her own home?
2. How about in a hotel/public pool, if one is away from home and staying at a hotel on Shabbat?
Reply: 1 & 2) Certainly. Bathing suit should be nylon or plastic, not absorbant.
Strangely enough, if you asked many people today, they'll say, "no way." Yet, ask them if it is OK to go to the Mikveh. They'll say, "certainly." Then try getting them to describe the difference. Watch them make up the strangest logic to justify their own confusion. It can be fun.
If the bathing suit is clean, (and it usually is) why cant it be of absorbent material?
Reply: the issue is Sechita(Squeezing out water) not Kibbus(washing)
By the way. Polyester is ok too.
In this case, there is no issue with sechita (a form of dishah, which is one of the 39 forbiden labors). The only time when sechita is specifically forbidden is when you squeeze grapes or olives (from the Torah) and pommegranets or mulberries (rabbinical).
What you are probably referring to is melabben (like wringing a cloth). That is certainly an issue, but not the same melakha.