Just be positive make them like you, bring a list of addresses for references, history of tickets or moving violations(hardest to remember the dates). Work history. You have ALOT of paper work to fill out on the interview. I have a gouge on willflyforfood that still seems to be pretty accurate. I think more than anything they're looking for pilots willing to learn and grow with the new company. Sheltair has a shuttle so dont pay a cab. The sim is an old Frasca 1900C type sim, its very shaky, but it seems to be more about procedures than fighting the sim to keep altitude. If you have problems with holding review that, you do one hold and then vectors for the ILS 9L. The written has some Instrument and ATP questions, mostly about interpreting Approach plates and VASI lighting. Try the shepperd air ATP prep for a refresher.

Again I think the interview mood is set by you, if you come in with an eager and positive attitude and can socially interact with whoever interviews you (it varies who interviews) you should be fine. Presentation is everything. Id say from some guys I saw interview make sure you're dressed professionally too, be a professional looking pilot, some did show up not so presentable, don't be like that. Everything is yours to lose or gain. Good luck