Dallas has two LAN groups that host decent sized parties.
Quakecon, the most formidable, is back this year in early August for the first time since 2019. Several thousand seats.
And LAN All Night which is a few hundred seats, more quirky, but friendly. Two LANs a year.
LAN parties are still really fun. In the age of online gaming, it still helps to go in with friends and have some idea of what games you want to play for several hours at a time.
If you're a game or but never have experience a LAN party, it's worth hauling your shit out to one! Bring a sweater.