The modern casino’s are also a good time and will too be up and running again before you know it.

Syndications produce enough passive income for me, I tend to avoid the wall st casino (although I do have index funds). 

Wall Street is a rigged Casino but its the only game in town so everyone plays it.

Note some lenders are requiring 30% nowadays given the significant volume of refinances.

If you send every dollar you make to pay your mortgage, put it under your mattress in cash, or lose all your income at the casino, that income is still taxable. 

Vegas is driven by CROWDS, and people will not be jumping back to big crowded environments so quickly and I can't picture people at nightclubs and pool parties flirting with masks on LOL Gambling is driven by excess capital, it's hard to say how that will be effected here but with many locals out of work the casinos will be reliant on tourism which I think is going to be a while recovering. 

I don't know how banks are about doing that sort of thing nowadays, but in other times it's been common to have an initial mortgage at a certain rate, and get a 2nd mortgage that is completely separate, but is a long term loan as well.

Nowadays, it's common practice to record the Assignment as soon as you get it.If you find the last Assignment of Mortgage in the assignment chain, you will find the current owner of the loan.

Is Las Vegas' market overvalued today if casino/entertainment venues aren't going to open or resume traffic for a year? 

IMHO, they are not going to want to crowd into Casino hotels or highway Motels - they're looking for a family home vacation experience.