@jroberts711 Personally, I would always check directly with the airline only. And if unsure, I would have it in written form, so you can refer back to it if needed (e.g. website info, customer support emails).
Here’s some info on checked baggage allowances per fare (scroll down to the table and check the column “Intercontinental flights”): https://www.flytap.com/en-us/baggage/hold-baggage
Usually, if you simulate a booking, you’ll be able to see how many suitcases you’re allowed to carry and how much it would cost to add more.
Info on hand baggage and personal items: https://www.flytap.com/en-us/baggage/hand-baggage
Rules for assistance animals: https://www.flytap.com/en-us/travelling-with-animals/assistance-animals
This is about as much as I can help (not affiliated to TAP!) 