I’ll bite on this one!
First time going, but with another friend who went for her first time last year.
First of all, I just have to say WOW to all the volunteer - thank you. I don’t think I can express how friendly and welcoming every single person at the event was. Long days in all sorts of weather and they absolutely knocked it out of the park.
We did all our shopping on Thursday and just picked up watching dressage here and there on the many big screens. We had our husbands with us and they were good sports about following us around. This was also the day we checked out the property, had a peek at the barns located on property that housed the horses who live at the horse park.
Friday we sat in the covered part of the arena to watch dressage (husbands were doing bourbon tours). We were happy we waited to buy dressage tickets until the day of so we could grab covered seats. Since everyone was pretty cold and dreary we ended up eating out in Georgetown this night instead of cooking at the Airbnb. We ate at Galvin’s and the service was stellar, the food great and huge portions.
Saturday we made some rookie errors. 4* we walked the course to see a horse per jump or so (starting at the first jump) and it worked out well. 5* we did the same but starting at the last jump and it just felt way too rushed. Next year we’ll follow the 4* but for the 5* we’ll pick a few jumps and hangout there for more than one rider. Also, we’ll aim to end whatever jump we finish at to be closer to the parking to avoid retracing our steps too many times. I do agree with what everyone says about Saturday in regards to packing food and snacks. It was 100% a requirement with how many steps you’re putting in.
Sunday for show jumping - we had phenomenal seats and I would buy them again next year in a heartbeat. We totally lucked out with the weather that it wasn’t raining though - probably less of a good time had it been dreary out.
One of the biggest surprises I had was just how nice everyone was. Even all the workers in the vender tents. Not once did I walk in anywhere and felt snubbed or out of place, and I can’t say the same about certain venders at other horseshows I’ve been too. The giveaways are extravagant and mostly all as easy as scanning a QR code and giving your name and email. I’d be curious to know if anyone knows anyone who actually won anything though - how easy would it be to collect all this information from people and just never draw it? I hope that would never happen, and it probably doesn’t, but the small cynic in me realizes that would be an easy thing to do 
Overall, I would say the usual tips and tricks given hit the nail on the head and I don’t have too much to add. I will say it was a total game changer going with someone who knew the lay of the land, even though she’s only been once before. Had it been just my husband and I, I think I would have been very overwhelmed with the sheer amount of things to do and see.
Edited to add:
Seeing how FIT these horses are in person is also eye opening. The videos online don’t do it justice.