ODESSA - The Sherwood Aquatic Center in Odessa is packed.
"Anywhere from 400 to 600 people on any day," Aquatic Center Head Manager, Brian Pollard, said. "I don't hardly expect us to get below 400."
The pool is open through Memorial Day then it will close and re-open June 2nd.
Pool officials said this holiday weekend is an observation period, seeing what they'll need coming up this summer.
"We're definitely trying to make sure everything still runs smoothly, stuff from the winter break, but really the most important thing is just to keep everyone safe, make sure they're hydrated," Pollard said. "A lot of the kids have been in school all year."
What they've seen so far is they need more supplies, which the city is helping them with.
"We've got 100 more of our lounge chairs coming next week," Aquatic Center Assistant Manager, T.J. Turner, said. "We got more tables coming to go under the umbrellas along with the chairs for our pedestrians."
To protect those hundreds, pool officials said they're ready.
"13 lifeguards on staff a day," Pollard said.
"We have our CPR, first aid, AED, all that stuff that we're required to have as well," Turner said.
Officials are getting a taste of these crowds to know what to expect this summer.