In the Shvetambar tradition, Das Lakshana Mahaparva is not the main traditional festival. It is primarily observed in the Digambar tradition.

Shvetambar Jains usually observe Paryushan Parva, and for Shvetambar Murtipujak Jains it is generally 8 days, ending with Samvatsari. The ten dharmas of Das Lakshana — kshama, mardava, arjava, shaucha, satya, संयम, tapa, त्याग, akiñchanya, brahmacharya — are respected by all Jains, but the festival form called Das Lakshana Mahaparva is mainly associated with Digambar Jains.

So, in short:

• Digambar Jains: Yes, they celebrate Das Lakshana Mahaparva
• Shvetambar Jains: Not traditionally as Das Lakshana Mahaparva; they observe Paryushan