She is really relaxed now

The photo below is of Miriam Burbank after she has died. Rather than being placed in a casket and viewed by visitors, Ms Burbank was displayed in what was a common position when she was alive - she's relaxing with a cigarette and a glass of wine, with a beer chaser. 

It is thought that such funeral displays began in this country in 1984 with the funeral of Willie Stokes Jr., a Chicago gambler known as the Wimp, who sat through his funeral services behind the wheel of a coffin made to look like a Cadillac Seville. The style is becoming more popular in Puerto Rico. Viewings there in recent years have included a paramedic displayed behind the wheel of his ambulance and, in 2011, a man dressed for his wake like Che Guevara, cigar in hand and seated Indian style.

I have questions as to the practicalities involved. Are these people buried in a casket or in their 'scenery'? Do visitors touch the deceased? Does the scene have to be refreshed?