I suppose ours is a fairly unusual case as this is our first time at Wembley in a long long time, and our first time at the new version. In stark contrast to Manchester City who have been countless times in recent years.
Looking at the attendances for both semis last season;
Man U v Spurs - 84,667
Chelsea v Saints - 73,416
5000 empty seats and over 16,500 empty seats respectively.
I will make the bold prediction now that everyone who wants to go will be able to.
The dilemma I am having with myself already is when do I buy my ticket whilst keeping in mind who I want to sit with. My brother and I are season ticket holders, but I will want to get tickets for at least 3 others who I will want to sit with who are not ST holders. Do we wait and chance it? Or get 2 tickets initially and get the other 3 as close as possible to our seats....
Good stats. I speculated this morning, elsewhere, that how tickets go for this could be interesting. As you suggest, City have been to Wembley a lot, and a semi against us is not a big draw for them.
I'm surprised at the Saints attendance. I know they've been to Wembley a few times, but I thought they'd sell almost whatever tickets they could get, within reason, for a semi like that.
I would imagine a fair few people will be in your position - buy now for those who can, or gamble and wait for later to include those with lower priority.