I consign with them regularly. It's very smooth/organized and frankly you've already done the hard part - unless you are going back on sunday to pick up unsold items. I never do... all gets donated.
I have been to the gburg and hoco sales, vastly prefer g'burg. The stuff is all really organized, at least early in the day. the clothes are all on the racks by size, so I generally just figure out where I need to be and methodically work my way up and down.
Don't bring a stroller, for the love of god. Just dont.
They won't let you bring in your own big bag, they'll give you a big blue ikea bag.
Also, don't bring kids of that age who will want to play with everything and shriek when you won't let them. I did it once and was miserable.
They always have a bunch of melissa and doug stuff, New, at discounted prices (probably co-op prices). We stock up for holiday gifts, etc.
Go as early as you can. As a consignor you get to go tonight, right? GO
