The tone of the original Guardian article was more like “the UK won’t invite Trump until parliament is in recess”, for what it’s worth.
Also from the article:
Officials are also said to be keen to limit the president’s public exposure more generally during the visit, in order to reduce the opportunities for protests
Though if there is a ‘stadium fundraiser’, I’d like to think that a counter fund-raiser would raise rather more money for the Poppy appeal.