Yep you can, I did it before I joined.
Yes u can go and ask the staff to escort u and try the gym for 1 day, they should allow . Best way to have the friends pass which will give u 5 daz free trial
I believe you can go in and one of the staff will give you a tour of the facility. Sometimes they have specials for a free 5 day membership, but I haven't seen it lately.
I dont know about a whole day without paying but you can go in for an hour or so and check it out
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