Not necessarily. Depends on which reserve period you get. For example, you get R03 for the month. This means your 14 “on call” period starts at 0300am and finishes at 5pm. In this scenario, you will have to commute the night prior, unless you check your schedule and see that they have assigned you a trip starting let’s say 11am and you self notify. If on the last day of reserve they haven’t used you, you auto release 6hrs prior. In this scenario you’d be free to go at 11am, so you’d be able to commute on a working day. If you get R10, that could be a pretty tight commute on the first day, but it might work out depending on several factors.

If you get R19 (LAS, MCO, FLL) you would be able to easily commute on the same day since you’re starting at 7pm. You’d also be able to commute back on a working day because you’d finish at 3am (9am-6) if not used of course. Another good thing about R19 it’s the fact that each RAP has a 2 calendar day footprint. This means the maximum consecutive R19 you can have in a row is 5. If you don’t waive the 4 day off min, you’ll basically end up having 5 RAPs, and 5 nights off at home. The downside would be all the red eyes that you’ll have to suck up.

We also have long call reserve (LCR). It has a 14 hour call out, so you don’t have to commute until they call you, assuming of course you can always make it on that 14hr window round the clock. LCRs are the ones getting called first, so you’d be pretty busy specially during summer time. You might get back to back trips, so probably will have to get a hotel in between.
LCR usually goes senior in the reserve leagues as there’re only few LCR lines and commuters prefer them.