I have a bit of input on this idea.
1. We are looking at about 4.5 to 5 hours of a drive non-stop to the facility starting near the OHare airport area. My family has a house about 20-25 minutes south of the rhinelander facility which regularly only takes 4 to 4.5 hours to get to.
2. This will definitely need to be on a Saturday as the facility is closed on Sunday to walk in customers. Also for divers den orders, it will help to write down the item numbers of the things you want ahead of time, or eve order it over the phone with special orders to have it boxed but will be picked up rather than having it shipped.
3. As mentioned, most people will be greatly disappointed with the public section of their aquatics department. About 90% of their stock or more is in the warehouse, which I highly doubt even with a connection may be against company policy for customers to be given access. One example in particular, simple filter pads for a canister, you want them? They have to go to the warehouse for them. Filter pads, one of the most common items people buy, not even on a shelf in the retail outlet at the facility.
4. $70-80 each for a trip to the place will honestly be a great disappointment. Unless you also have cats dogs and birds to stock up on supplies for, you will be losing much more money than you will save. I suggest rather a group buy with a Saturday delivery and a group meet that day we can all chip in some determined amount for food to be provided. No 9+ hours crammed in a bus, and we all still get good deals, good food, and a chance to meet up and put some faces to names in person.
I hope this input helps...