Hello,
just to let you know that I found a solution to retrieve the data stored in this context (the available_seats being more difficult to retrieve in python than the other attributes), thanks to the contribution shared and the track proposed by @tkimnguyen at https://community.plone.org/t/does-anyone-have-any-suggestions-of-bringing-saveddata-count-to-another-part-of-a-plone-site-using-collective-easyform / 7066/4
Best regards,