You'll luv the HRH...I started contacting the concierge desk 2 months' out. IMO the hotel staff is friendly & helpful, but they do profess to being "laid-back" (i.e., I did have to make a few reminder calls as my date neared to pin them down).
I would think it would be essential for your time period to have res. They helped us with Mythos (great) & Margarittaville (fun). I called NASCAR myself and made res.
Where do you want to eat...our experience @ The Kitchen was disappointing - dirty buffet area (bar & floor area), overpriced & of poor quality. Other than the convenience store/coffee stand they don't have anywhere onsite to grab a quick/light meal. Good Luck.