Smugglers run is not an issue. Just may have to wait.
RoR is the trick - there is NO stand by queue. If you do not get a boarding group, and most blogs have those as being all gone within minutes of the park opening - you arent riding that day
Try to make a FP for Smuggler's Run, if not, just wait.
Have a "ring leader" ready with their phone in the
MDE app who has everyone in their friends and family list. Everyone must be TAPPED INTO the park (magic bands scanned). Once the park opens, its off the the races with MDE.
My question here is, should everyone in the group be trying at that time? I would think so, and it will just say you are already in a boarding group if someone else is successful.
I would be at the entrance AT LEAST 30 minutes prior to park opening. If you are not in HS at it's official opening time, you are cooked.
I would also try to do this on day 1 of your trip. That way, if you do not get into a boarding group, you can try on day 2.
Once you get into a boarding group you will get a push notification when your group is called, at which point you have 1 Hour (it was 2, but I think they changed it) to get to RoR. You do not have to be in the park for that. Just be able to get there in an hour. You can keep an eye on the current boarding group, and if they are calling up to group 17 and you are in 20, you can start heading back to HS if you are worried about making it in an hour.
You literally only have to be in HS for 10 minutes to try to get into a boarding group. Thats why I say try it day 1. If it doesnt work, try on day 2. You will be able to leave the park such that it wont ruin your plans, worst case you get called mid day and have to skip a FP at another park to get to RoR.
NOTE: this is advice based on my experience and how the process has changed. I was there 12/6 and 12/7. They let people into the park early, and you did not have to wait for official park opening to join a boarding group, once you were in the park you could join. I was in the park before 6:30 both days.