My store has been doing it for about a month or so now. Best advice I can give is to be patient with it because it will hit you like a ton of bricks.
Rugrat is right on many counts... they are only going to allot you a small rack for storage. Not. Enough. Not in the least. By the time everything was said and done we had to create two or three more hold locations.
For supplies: get them on a SAP weekly order -- there is a 10-day lead time for all supplies so make sure you are ordering them regularly as to not run out... this is especially important with the boxes and packing slip paper. I am a bit envious -- a lot of the pilot stores going live around now will have a lot of the fixes of things we battled. Your rollout guide has a really great supply order guide (complete with pretty pictures).
Equipment: Allocate your equipment for Ship from Store. We have two PDAs and a hip printer (trying to snatch up a second). Don't lend anything out. Also, the PDA is the preferred tool, LPDAs, while they still work, don't have the full functionality for Ship From Store.
Orders: Right now, we're not scored like we are for guest pick-ups. The orders will come in so fast it's hard to keep up. When you roll out, they will allocate you a certain payroll schedule (1 opener, 1 mid, 1 closer). The best situation is to come clean every night, but if you can't -- at night, after the mid leaves and the carrier has done their pickup, focus on packing. Even if the picks pile up at least you will be clean in the morning, so you can focus on them instead of trying to play catch up all day. Even though you are not timed it's important to get the picks done in a timely manner -- the packing slips print out on the hour, so the more you get in hold the more you can get printed.
And Rugrat -- you are SO right... most of the orders are predominantly unlocated softlines. This was so awkward having me... a thirtysomething male... picking through panty bins and swim tops and bottoms. If you don't know softlines, the more you do picks you will learn. But make sure you partner with the softlines team, though. I can't tell you how great it was that they were there when I was trying to find certain things. One other thing... use the Item Info function -- it gives you a picture of the item you are looking for and that also helps.
That is it... it's a really great sales driver so if you create great routines and procedures you will be fine. The pilot page has some great information so keep up to date there. Good luck!