Question: when you get the Lisboa Card, are you limited to one entry per place covered by the card? Or not? The one in Paris doesn't (eg, you can go to the Louvre as many times as you want), but others (eg, in Venice) you can only go into a covered museum one time.
Interesting - I tried to find this on the website, and it doesn't say either way. I even went to the Terms and Conditions page, which is only in Portuguese, and ran it through Google Translate, and it's not discussed there either.
Your best bet for an answer is to e-mail their Customer Service. Even there you have have ambiguity: firstname.lastname@example.org is the address at the top left of all pages on the website, but email@example.com is the address on the Attractions page.