When I had your advantages, Anne, this was my strategy:
1. Never go to the mall on a weekend -- too crowded and chaotic.
2. Slip out to the mall early in the morning, just as the stores were opening while kids were at school and before my job started, for just one hour or so. When you are pretty much the only person at the store, you get undivided attention from the sales people. I got to know some on first name basis, and learned when, for example, BR rec'd their weekly shipments (Tuesdays) so I'd get the first pick.
3. Alternatively hit the mall or shops while kids were at their after school activities. For example, drop kid off at music lesson, hit a *single* store, set alarm on phone so I gave myself plenty of time to leave the shop and get back in time for pickup.
4. I'd average once a week, sometimes twice, but I'd hit only a single store at a time. I'd check online before going, so I'd have a mission, but also be open to surprises (for example my local BR would often get their shipments in store before they appeared online).
5. The more often you go to your favorites, the more you learn their stock too, so each trip gets more efficient, since you only have to focus on what's new, or what is now on sale that you left behind before. And the more frequently-yet-quicker trips are far less exhausting.
I could do all this because I am in an urban area so I am just minutes to a variety of stores, with parking that is not a nightmare.
Nowadays it's a lot different and I miss those days! My life has taken a shift. Kids are in college, so I'm not trying to kill time while they are in their activities. I have a new job that while still work-from-home, starts at normal 8-9 AM time, not noon. As a plus it does tend to end at a normal time (5-6 pm) but by then I'm just too exhausted to want to go shopping, and the stores are more crowded too. And finally, and worse of all, more and more stores are shifting their petite offerings to online only... they call them "online exclusives"... so this means even when I do have an hour to spare, there's nothing that fits me.
These days, I'm resigned to more and more online shopping and less and less B&M. I am traveling a lot for business so I am finding it a relaxing pastime to online shop in my hotel room before bed, or while killing time in the airport. Otherwise, I'm more resigned to having to shop with the masses on the weekends, for long marathon stretches.
Appreciate your advantages while you can!!!