on the vet from the animal shelter who tells about the dove to dAvid and Mary Margaret: he is dr. dolittle in my opinion.
On Grumpy the dwarf’s story: simple answer they just hoped the audience would not notice that the dreamy episode did not include this tidbit. also I don’t care if we dont see this story because it is not central to my understanding of the plot.
on Regina and august: probably she just saw a picture of Pinnocchio once upon a time or was spying on the war council about the curse and saw him.
On Rumpelstiltskin and REgina meeting wE aRe Both: back where we belong refers probably to hsi ability to see the future and knowing that it would be Regina who would cast the curse.. also i like your explanation of portal and portable but it probably is not true since we clearly saw Cora and Regina in The Queen of Hearts.
Magic always comes with a price, so I pay with visa.