diy Dinner Opinions

Hi guys,

I made this profile to do some research on here about DIY weddings and am just looking for opinions.
My fiancée and I are planning to hold a "cocktail" type of reception but with assigned seating at tables that people will be sitting at through the ceremony and reception to avoid room flips.
We're planning on having a few traditional wedding games and probably karaoke as well since the two of us find just sitting around socializing pretty boring and we're not really into dancing too much (there will be dancing, we just don't want that to be the only entertainment). We also love games and singing, so we want to have something more our style. We're planning on having tea, coffee and some mocktails set up on a table not too far from the bar for people who don't want to drink, or who simply want to add a shot to them like our "signature drinks".
We're planning on having 2 double wide rows of tables and having tiered plates down the middle for the food, along with a separate dessert buffet table. We want everything to be finger food, but are doing the food ourselves. So we're thinking of ordering 3 or 4 types of subs with just the meat and cheese, and cutting them into 4. We'll arrange them on the top tier in the center with fancy toothpicks so they don't fall apart, with a lower tier of vegetable toppings, and a bottom tier with artisan vegetable chips and condiments. This will all be arranged on multiple small plates that repeat down the line. The the dessert buffet will consist of glazed donuts, cookies, tarts and individual ambrosia salads.
If you were to attended 4 or 5 hour event like this on a Friday evening would you be satisfied with sandwiches, chips and desserts to eat? Mainly we're thinking this is the easiest way to go for lack of prep and equipment as well as budget friendly because it's all coming from a local sub shop and bakery we enjoy instead of a caterer.