To not use Double cream on the Christmas Trifle?

[LauraSaidIShouldBeNicer]

Help me decide.... I am making individual trifles for Christmas day dessert. I am making them Christmas eve, normally I use Double cream and icing sugar mixture for the top, but this year I've been to costco and got a huge spray cream to use over Christmas. Would it be so bad to use spray cream on top just before serving?

My DM always said that adding a little caster sugar helped it thicken and hold its shape. So I always do.

That said, she had a terrible sweet tooth...