We don't have family nearby either, we usually visit them one weekend in December. Sometimes I wish we were having a
big, multi-generational Christmas day, in nordic knitwear and new cashmere socks, like on the telly.... then I remember what my family are really like 
Get up, make coffe/tea, watch dc open presents
smoked salmon, scrambled egg, bucks fizz for brekkie.
Open family, non-Santa pressies.
Take dogs for long walk in local country park, through woods and round the lake. Exchange greetings with other dog walkers and familys. Kids on new bikes and scooters, everyone with new hats and scarves, tinsel round dogs necks! Everyone says Merry Christmas, it's nice 
Home, to play with new toys, read new books, neck bucks fizz. Snacky lunch, teens are allowed to retreat to bedrooms to play new console games for a bit if they like.
Dh cooks roast for about 6-ish. Nothing too hard work, just a normal, nice roast dinner with turkey crown instead of our usual chicken, and a couple of bits like bread sauce and cranberry sauce that make it a bit special. Something like Sara Lee gateaux for pud, no-one likes xmas pudding. Crackers must be pulled, jokes read, and hats worn.
No telly, unless there's something particularly special - like The Gruffalo a couple of years ago. We don't bother with Queens speech or films.
Play a board game with teens after dinner, when little ones are in bed. I buy a new one every year, but TBH I think I have them all now.
Port and nice cheeses. Chill. Bed.