As far as I know, vacation expansions only apply to lineholders, not reserve lines. You can still slide 5 days either side though. If the 7 day vacation block doesn’t touch 7 R-days you can go in and request which days you would like dropped, as they will take the required R days from somewhere. You will get reserve leveling for those days from the first day of the bid period. Any unused credit (~4:45ch/Rday vs 6ch day vacation) can be bought back at the end of the year if you’re under the max buyback