It was 6 years ago that we went to DLP so my memory may be fuzzy but we loved every second of it as my wife and I never went alone to a Disney park before we had kids. The whole day was great as the park was not crowded and the snow made it even more magical. Loved taking the RER train from Paris. The stop was right outside our flat near the Eiffel Tower.
So Rise is an ILL ride meaning you pay for it separately and the cost changes based on which day you are there. It is totally worth buying, IMO. I would do it simply because the ride is prone to break downs and you would have a pass to return whenever it goes back up. Galaxy's Edge is great to walk through at night. Rise does get cut off around 9pm.
If you have Webslingers then I would skip it at DCA and focus on Cars Land, Pixar Pier, and Guardians. Rocket is a part of the Guardians pre-show so definitely try to get in the center of the room to see him and hang back for a bit for a fun part at the end. That's also a good one to ride at night so you could always rope drop Guardians and save the
Genie+ selection for later in the day.
Space Mountain is worth a ride for sure. No loop but it's still fun. I am not a fan of the Hyperspace Mountain overlay either. Not everything has to have something Star Wars attached to it. It's criminal that they changed the DLP one. That ride was fantastic. I love Jules Verne so that whole land is incredible and the look of Space Mountain II is amazing.
I completely forgot about Runaway Train. I think that's just a normal Genie+ selection now. It's at the very rear of the park so I don't know if you want to make that the first thing you do.
You will need data for Genie+. There's wifi in the park but it's pretty terrible. You might want to look into data plans for going overseas. Or maybe get a SIM card for your device when you get here. There should be some temporary options. Not my area of expertise though. Genie+ lets you choose a ride from the current available time. You can only have 1 at a time but once you enter the hour window for your ride or 2 hours from the last selection, you can choose another. But honestly, unless the park is super busy that morning, most selections are within 10-30 minutes of the current time meaning most rides are walk on or low waits. I always recommend people ride Genie+ rides without the Genie+ early in the day if they can so you have the option to re-ride later with the Genie+ when the parks are more busy. My kids were so proficient at Genie+ that they were able to ride multiple Genie+ rides on standby and then later with the Genie+. There's also multi-experience passes that you can get if you ride goes down and you have a Genie+ selection in that same time. Then you can use it for most of the other rides, minus Rise and probably Runaway Train.
One important tip I learned on the Indiana Jones ride is to walk into the standby queue for it before booking at Genie+ selection for the ride. If the line is outside the building or only going up the ramp, do not book the Genie+ selection. If the line is in the switchbacks to your left and is pretty full, book the Genie+. All you accomplish with Genie+ on that ride is getting past the outside queue. The Genie+ redemption stand is right by the entrance to the building and you still have to make your way to the preshow area.
Depending on when you go, there may be two fireworks shows. And you really need to take in Fantasmic and World of Color if you've never done so before. Typically Disneyland closes at midnight in the summer and DCA closes at 10pm. World of Color goes at 9pm, I believe. When it's over, they usher people out of the park. DL stays open so people can shop but the ride lines cut off at midnight.
Definitely take a look at online ticket sites to get a little bit of a discount. As far as food, Ronto wraps are good. I like Jolly Holiday for a quick bit. Honestly, I try to stay away from sit down restaurants because there's just more time for other things. Bengal BBQ, Tropical Hideaway, Rancho Del Zocalo are all good. You'll need your phone for mobile ordering at some of the locations. Like if you want a Dole Whip while you watch Enchanted Tiki Room (a must), you will need to mobile order for the stand outside the attraction. Otherwise, you can wait in a line at Tropical Hideaway.
So if you're into YouTube, I recommend the following people: Disney Food Blog (she's more Orlando but does some good Disneyland videos), Provost Park Pass, and FreshBaked. The latter is more things happening around Disneyland but Provost and DFB have some good recommendations for how to navigate Genie+ and Disneyland/DCA.
I'd still advise looking into a cheap US Sim Card though. There's cheap offers on 
