There are a lot of reasonably priced hotels within 6 miles of the Tournament Site.

I would recommend getting a motel reservation that has free cancellation in case we do not get the minimum of 7 parli debate teams.

Holiday Inn Express & Suites Charlotte SE - Matthews
9420 E Independence Expressway, Matthews, NC 28105
5.1 miles to the tournament

Sleep Inn Matthews-Charlotte
9900 Matthews Park Drive, Matthews, NC 28105
4.9 miles from the tournament

Hampton Inn Charlotte/Matthews
9615 Independence Pointe Pkwy, Matthews, NC 28105
5 miles from the tournament

Comfort Inn Matthews - Charlotte
1718 Windsor Crossing Dr., Matthews, NC 28105
5 miles from the tournament

Closest Hotel:
Country Inn and Suites, Charlotte I-485 and Highway 74 E
2001 Mount Harmony Church Road, Matthews NC 28104
3.7 miles from the tournament

Note on the Country Inn and Suites: This is the closest hotel to the tournament. The area of town is OK. However, there is an establishment of ill repute across the highway from this hotel. My family stayed in it several times ten years ago and it was OK.
It can also be hard to get to when headed east from Charlotte requiring a U-Turn on the Hwy-74 or turning left on Stallings Rd and then left on Stevens Mill Rd.
However, there is a way to avoid Hwy 74 when going to the tournament from this motel.