I am making a Tres Leches Grooms cake in a few weeks and I have never made a stacked Tres Leches before, some sites I look at talk about a "filling" other say not to put a filling, I need some advise and if you use a filling if you wouldn't mind sharing your recipe I would greatly appreciate it!!!!!!!

ASure you can fill it. Look at YouTube for some tres leches videos. Just know that it's normal for some liquid to pool at the bottom of the cake. You could fill it with whipped cream or pastry cream and put some fresh fruit in between layers. For a tres leches I'd use SPS to stack.