Yes, gulaba is opened in this season. You can visit there and have fun.

Depends year to year. Most probably you will see snow in the upper reaches of Golaba and Solang valley. Taxi cost varies between 2.5K to 3.5K depending on how far you are going.

If you are travelling with family prefer local can or taxi they know the terrain better, secondly if you planned a day visit leave very early say by 7:30 am and at least you will get some good parking spot.

not at all safe.during monsoon season always avoid going to hilly area.

Yes you can cover both the places in a day. Starts early as possible for Gulaba , It's a very narrow road , so earlier you leave better will it be for you to come back early ,else you can get stuck in traffic . I recommend leave early so that you reach Gulaba by 7/8 am . So you can be back by 12 noon / 1 pm . You can host to Solang Valley after that. As for 2 year kid , you will have to be careful and protect the kid with proper clothing for chilly, cold weather up at Gulaba .

Hii, Solang and Gulaba are good place to visit, you can visit Naggar which is close to manali city.

We booked hotels thru make my trip.. For hotel bookings its a good guide as lwe my experience..

Hii, April month is pleasant to visit. Try to avoid long journey and avoid compromising on journey (taxi or bus). As if taxi or bus is not proper then your whole vacation can be trying and planingfull. Solang valley, Gulaba and Rohtang Pass will be open for tourists. If you have time then you can visit a small town near Manali which Naggar.If you are going till Rohtang pass then i don't think so there will be no breathing issues. Happy Journey

In generaly that is not the time for snowfalls,but if you are lucky then it can be.