I am an Eastern Rite catholic. Eastern rite is much more strict than the Latin rite.
One example,I understand you have 6 or so holy days of obligation. We have 22.
We fast a lot. We still fast on Fridays (actually the obligation for that was changed because of the Eastern Rite catholics – many people dont have meat anyway, so to fast on Fridays was futile). That reminds me of a story my mom told me. When she was little they would barter eggs for bacon fat (she only had 2 chickens). Because it was Friday, my mom’s mom threw out the pierogies that were fried with bacon fat because it was a fast. My mom said she was so hungry, she would have went in the back to get those bacon-fried pierogies out of the farm animal feed to eat herself, but she stopped herself because it was a fast.
FOR THE NATIVITY: We do not eat meat on Chistmas eve. We have a special meal made of 12 courses all without meat (e.g. meatess borscz, pierogies with cheese, kraut, mushrooms and/or cottage cheese), kapushnyak which is a kraut & pea ‘soup’ or accompanyment, 1 fish, etc.
FOR EASTER: On Good Friday we do not eat any meat OR dairy products. My father & I would eat raw onions dipped in salt with some crusty rye bread (made without eggs). From 12 to 3 there was NO SOUND in the home. No talking, no TV, no radio, no phones. that was a very solemn time. On Holy Saturday, we do not eat meat. We prepare our foods for blessing which comprise: Paska (an egg bread represents the Risen Christ), dry cottage cheese, butter, kolbassi, ham, salt and eggs and horseradish (represents the bittter herbs of the Jews at Passover). This food is blessed on Saturday followed by Eucharistic Adoration.
Easter Sunday: nobody eats or drinks anything until after church (fasting until you can proclaim ‘Christ is Risen’ - which you wouldn’t ‘know’ unless the priest proclaims it). Only after church the family gets together to eat the blessed foods. The food is kep out on the table all day until it is all eaten - because it is blessed.
As for Lent, our Lent is 3 days longer than the Roman Catholic lent - because Lent to us is 40 days before the Passion & Death, Good Friday (Not Easter Sunday). We fast also on the first day of lent (and there are no celebrations, e.g. Fat Tuesday prior to the first day of Lent).
I just recently read that Our Lady said all our prayers, all our deeds mean little without meditation and fasting along with it.
If you think all of the above is hard, really it is not. When my children were growing up, on Good Friday I would take them (after 3 PM of course) to a buffet for dinner, but they could only get vegetables, salads, fruit and non-dairy type desserts.