This is the decline of film volume, but C41 is easy to home process with a kit or raw chemicals. Electric kettle tank cbag thermometer bottles and plastic basin.
Huston Tx will have mini labs lurking like diamond backs, frequent or they will close.
I got one open on Sundays till 18:00 200meters from where I normally train for home at end of weekend shoot... good quality any service you want, but 5GBP for develop only! The staff are friendly too.
Lomo Spitalfields Mkt London UK.