Whilst of doubtful relevance just an example of what can be done - in the little town of Vevey in Switzerland (pop 18,000) they have a festival - fête des vignerons. On the town car park they started building a 20,000 all seater stadium in January - the fête is for just 3 weeks this summer and the stadium will be completely dismantled by October.
Looking at our pitiful East Stand for another season is very sad
https://www.fetedesvignerons.ch/en/the-show/the-arena/If we finish it to the Cardoza “happy shopper” version as in the CGI’s produced it will look better unfinished.