I'm planning to pull the strings and check out this provider i have been looking at. She is not gfe, which is fine with me, for my first encounter im thinking maybe a 30 min or 1 hour session. Do you guys with a little more experience dress up, or do you put on something like sweatpants.

Even if i freshen up before the appointment, would it be crazy of me to bring a rag and bodywash to freshen up again once i get there, im sure nerves will kick in so maybe i should stop by the store and get me a red bull.

but never sweat pants.  Maybe you could go for a nice warm up suit & look like someone out for a jog.  You want tro dress like you belong in the location.  A business hotel is different than a suburban location.  I ussually dress clean casual.  
I recommend 1 hour, especially on a first meeting...  figure she might want to chat a bit before getting to the action.
I am able to go from home to the meeting.  Over an hour, I wash up on arrival...  and it's never wrong.  If nothing else, wash your hands throughly...  you want to put finger where?  They damn well better be clean.    Some guys have a more extensive travel kit.  I have been known to take my own soft soap & hand towel so I do not have to depend on the location...  hotels usually have plenty.
It's never wrong to have a sealed 3 pack of condoms...  stalls off certain scams & other emergencies.  
H

I always give the gentleman a chance to use the washroom to shower, wash hands, brush teeth - whatever they may need to do. I typically have anything they may need available out on the counter. Additionally, this gives them time to just collect their thoughts, calm their nerves, etc. Some want to do a full shower others just wash their hands and get their donations in order. Now others just want to walk in and rip off their clothes. Everyone is different! I never include any of this time in the visit time.

When I arrive somewhere, I like the chance to freshen up for the same reasons - changing into lingerie and whatever else I need to do in addtion to taking care of the donation. Also, I get a chance to shake off any nerves that comes from meeting a new gentleman.

Have fun and play safe!

Summer

No jeans, no sweats. A nice clean pair of slacks and a longsleeve or short sleeve casual dress shirt with a pair of closed toe shows, leather or synthetic, with socks on should suffice. I have the advantage of travelling from home and don't live far from appointments. I wash at home and have not gotten any complaints. I wash after at the incall location, depending upon how safe it seems.

You do not have to arrive in a suit and tie but no sweats.Show the lady that you did put some thought in to coming to see her wear some nice pants a button down shirt.If you do wear jeans a very nice pair that are not worn with a nice shirt no T-shirt.I do not see anything wrong with bringing your own personal soap you always use and a washcloth(I am sure she will have towels for you to use)but if you want to bring your own that is your choice.It is normal to be nervous when meeting someone for the first time believe it or not I do get a bit nervous sometimes when meeting new gents it is very common.
Don't overthink just go with the flow and have fun!

Just dress casual.  Maybe jeans and a button up shirt?  Not too casual though....had a guy the other day wearing carona beer pajama pants. lol

as everyone knows, it's hot here most of the year.  So, being retired, and sometimes retarded, I dress Florida appropriate.  Shorts and golf shirt or "Magnum, PI' shirt for warmer weather.  In the short time that it's too cold for shorts, my dress is jeans, clean and neat of course, and often times, a flannel shirt over a t-shirt with some color.   Hot weather will probably mean flipflops, unless I have to go thru the lobby of a nice hotel, then will wear clean white sneakers, and in colder weather, the sneakers again.

So far, I have never had a provider that had a problem with my mode of dress.

Swim

Honestly, if it's a good session clothing will come off fairly quickly. If it makes you more comfortable bring your own toiletries. When you first arrive ask if you can take a quick shower. Trust me, this will leave a good impression on her. That already makes you a "7" on the hobbyist scale.