"Palace of Doges" or maybe "Doge's"--but this is a spelling matter only.
podges(?) -- I'm not familiar with that word, but I'll take your word for it.
"San Marco"--not St
"I serve Coca-Cola"
I don't think "or Thames is" is right, but I can't make out the correct words.
I don't think "had reservations" is right either. It's "made" something. "Ovations"? That doesn't make sense, but it's the best I can do.
"When I sing unsoberly"
"And I shout as I sit in Venicia*
O who wants to fondle again in my gondola
Up come the river policia"
The last line ends with "...Venetian blind" but I'm missing a word or two before it.

[*this line doesn't need to rhyme with "wier"; it rhymes with "policia"]