The problem with visiting bases, is 1st you have to get on, thus, unless you are military you will not get on. Bases are not like colleges, they are not open to everyone. If you are not military you need someone to sponsor you.
Second, visiting Langley will not be anything like Mt Home. Night and day difference. Langley has always been voted the best base in the AF, ID is in the hub of Elmore county with 8K people.. Visiting Bragg and going across the street to Pope is again night and day. Pope has no commissary, theatre, etc, because they have the ability to shop at Bragg. Go to Elmendorf and they are attached to Ft Rich...Rich there is Pope, Elmendorf is Bragg.
Finally, your bases may be tied to your career, and at this time you will not have that idea yet. For example, if you fly 22's you are going to spend your career rotating between Elmendorf and Langley, you may also go to Nellis, Eglin, Hickham and Edwards, but that is more rare than common. If you fly Strikes you are going between Mt Home, Lakenheath and SJAFB, again maybe Nellis and Eglin. Thus, even in the fighter community you are going to very different places.
If you go Army and are a jumper, you will also rotate between specific bases Drum, Bragg and Benning. You go in the Army as a PA than you get to go anywhere there is an opening for a PA officer.
I am not trying to dissuade you from visiting bases or looking where you may go, just realize your actual career will dictate where you PCS to. Everyone gets in with the grand illusion oh, I can live in Hawaii, when the reality is you have a better chance of becoming a general, than getting an assignment there. The reason why is at least for the AF, you either take a crappy tour and it is their thank you, or you have managed your career very well to get there. Just because you put Hawaii, Germany and Italy on your dream sheet does not mean AFPC won't laugh their butts off and send back orders saying Cannon.
I can tell you when Bullet proposed and was at UNT, I thought oh we can live at Langley, or California, or Florida...I never thought my 1st 8 months of marrriage I would find myself in Almogordo (commonly known as OMG NO) and Mt Home ID (commonly referred to as BumbleF**k Idaho). We did get to go to AK, UK, and VA, but we never did make it to CA, HA or FLA. Also out of his TX course of 16, not one of them made it to HA, 1 did go to Eglin.