Chetan Mashru fleeced desperate men for thousands while running a wedding visa scam but is now worried about the quality of vegan food in Queensland jails, where he is likely to end up.

Mashru, a former migration officer, and celebrant Divya Gowda are due to be sentenced on Tuesday over a spousal visa racket they ran from the "one-stop shop" set up at their Oxley townhouse in 2011.

Chetan Mashru and and celebrant Divya Gowda arranged 16 bogus weddings of Indian men to Australian women and earnt more than $100,000 with the scam.

They arranged 16 bogus weddings of Indian men to Australian women and earnt more than $100,000 with the scam, Brisbane District Court heard on Friday morning.

"It was not a small-scale affair by any means," Crown prosecutor Greg Lynham said during sentence submissions.