If you're doing a walk-in, make sure that what you're looking for is aligned to what the hostess is comfortable with, specially at the base rate. You will get the sf2, bodyslide, and HE, on every session, but the length, intensity, and what's understood by what this services mean, will be interpreted very differently by each hostess. I would recommend you to contact the hostess that interest you from the website on twitter. Most of them are very polite and straightforward when asking questions appropriately. Pm me if you have any specific questions.
Good luck!