In the last hour, a meeting of the Council of Ministers has presented new restrictions and rules that will impact tourists.
https://www.safecommunitiesportugal.com/latest-news
Please read the above article if you have a trip planned in the near future. Looks like the EU Digital Certificate or negative covid tests will be required for many establishments. Of course, if your trip is months (or maybe even weeks) away things could have changed - again.
But the above website has good up to date information on the current situation.