Don't think so Jim. Do you want me to take you through them?

1: So I knelt down before him and swallowed my pride

Never happened pure invention and judging by what she said at her speech at the wedding she has clearly declared her intentions.

2: Second Verse
I won't need to wait for a passport like some,
Prince Charles just whispered a word to his mum
Who spoke to Theresa and they all did their bit,
They Windrushed me a passport so now I'm a Brit.

Meghan Markle's application was handled exactly like any other. The BBC did a report on the process the application process was begun in January 2017 - but never mind Jim never let details or the truth interfere with your attempt at humour.

3: Third Verse:
My wedding will cost just a few hundred grand
For horses, policemen and soldiers so grand.
And some of the public will get an invite,
But bring your own picnic for money is tight.

There have only been largely uniformed guestimates of what people think the wedding has cost - none of the costs guessed at have been confirmed by anyone. The major cost centres around security and ignores the fact that all the police and armed forces personnel present would all have been paid whether they were in Windsor or not. The traditional costs for a wedding were met by Prince Charles (Meghan Markle apparently bought her own dress). All 1,200 guests invited to view the wedding from inside the lower ward of Windsor Castle were given a "goodie bag" with a drink and something to eat - some are currently on sale on e-bay for £1,000 according to today's newspapers. Of the figures being bandied about wedding cost £32 million income over £100 million.

4: Fourth Verse:
No tax on our bedrooms, you've paid for our rent,
No mortgage or gas bills, not even a cent.
And soon there'll be babies, one, two maybe three.
I won't have to worry for EVERYTHING'S FREE!

This may come as a great shock to you Jim but, oddly enough, the vast majority of people in the UK do not pay tax on their bedrooms (IIRC you have to be in receipt of housing benefit before that applies). No taxpayer pays a penny for any property either owned by the Royal family, or the Crown Estate. As the entire Royal Family pay tax I dare say they also pay their household bills and everything is as free for them as it is for any other citizen. The total expenses incurred by the entire Royal Family are paid for from the incomes from The Crown Estate, the Duchy of Lancaster and the Duchy of Cornwall (Very transparent, reported annually and fully audited - look them up). Once all those expenses have been met the profits from the Crown Estate, the Duchy of Lancaster and the Duchy of Cornwall are fully taxed and contribute hundreds of millions to the Treasury each year.

5: For Scotland will be a Republic by then."

Dream on - if the SNP went for a second Independence Referendum today, they would suffer a greater defeat than they did in 2014. So far the SNP have failed Scotland miserably a fact that has not escaped the notice of the electorate of Scotland. On Brexit here is an example of the SNP idiocy: Scotland's trade with the rest of the UK is worth just over £50bn, Scotland's trade with the EU is worth £12.4bn - Guess which one the SNP feel is more important to Scotland? You got it the SNP opt for trade with the EU as being more important.

All the above easily checked.