Then do that and dont arrange a wake.
Are you travelling alone or will you have someone you can trust to help you minimise family contact? Or is there someone local who will do that for you?
Grief with added family conflict will be stressful.
I assume that the family split is not a secret to the NDN (or family)?
Whats the culture?
I would have said if the people are not willing to attend the burial (once it is not invitation only) they are not close enough to worry about feeding.
If you want to visit and meet with people and avoid family I would make private arrangements directly with the individual. This is where there is an advantage of having someone you trust to take care of the "housekeeping" of making contact and arranging details.
If you dont want a wake make sure a local involved in the mass or even the mass celebrant is aware that you want as private a service as possible and that there will be no wake.
If your family want to organise something that is their choice and you dont have to attend or pay.
If you do want a wake you can speak to the nearest local venues which can provide a service or the funeral service will have a list if you are using one.
You dont have to have a wake diectly after the service you can arrange it for a night before the service or have an evening gathering a day or two later.
If you dont want to pay for alcohol you should look for a space which has no alcohol counter in the room or has roll down shutters over the bar. And alcohol can be available to purchase outside of the room eg hotel space or private lounge in a bar so people have the option to buy their own.
Basic food (sandwiches/finger food and hot tea/coffee&water ) chairs and tables and a space big or small enough to hold the expected numbers are all that are needed.
As there will be a "gap" a sitdown lunch/dinner could be scheduled for at least 1/2 hour after you are expected back to give you time to speak to people etc so tea and coffee can be provided for the 1.5h wait.
If you want people to wait at the venue its helpful as you (and the family) will be away for the hour that you organise someone to "play host". This would be getting the people into the correct room getting the staff to circulate the food to the tables.
And if your want to serve limited alcohol this person organises a round via the staff and after that they buy as they move around tables or after the 1 or 2 rounds people have to buy for themselves. Or bar is free for anyone to order for a fixed period or to a fixed cash amount (this can be expensive and staff have to ring drinks properly as aome venue claim they "overprovided" trying to bill extra).
A trick is to have staff keep a few tables free so that you have your own space to move into when you come in later and dont end up stuck on a table with some one you dont want next to you.
Sorry for your loss
(and remember do what is best for you in both short and long term).