Use the actual park address, 209 State Park Road in Murfreesboro, when planning the drive. Check the park's current admission and hours shortly before traveling, particularly around holidays. The search field and the buildings do not close at the same time, so leave room for returning equipment and having specimens checked.
The official listing checked for this guide shows search-area admission at $15 for visitors over 12, $7 for ages 6–12 and no charge for children under six. A basic searching kit is listed at $15 rental plus a separate $45 refundable deposit. Two adults and an eight-year-old would therefore pay $37 in field admission, or $52 with one basic kit, while also needing to cover the deposit. That is an example from the posted prices, before travel, food or other purchases; confirm the current charges when booking.
Bring what makes a day on exposed, uneven ground comfortable: water, food for the time you plan to stay, a hat and footwear you are willing to get dirty. Choose clothing for the actual weather rather than for a photograph of a sunny visit. Keep your first load of tools manageable.
Ask the park about access that matters to your party. An accessible building or a nearby accessible trail does not establish how a particular person will manage a plowed field, muddy ground or a washing station. Explain the activity you want to do when asking for advice, rather than treating the whole park as one uniform surface.
Finally, leave time to look at what you collected. A day of digging can end in a hurried pile of unidentified stones if every available minute goes into the next bucket. Give the last part of the process a place in the plan. The field asks you to notice something; the most useful souvenir may be knowing why you noticed it.